The DENNISON DNA Project: Singleton Patrilineages

DENNISON Miscellaneous Patrilineages

Collected here are DENNISON patrilineages with only one tested member. At present, there are two of these, and both would be especially desirable for American DENNISONs to match to because the earliest known ancestors of both have credible links back to fairly specific areas in Britain.

Bartholomew (“Bartly”) Dennison, the ancestor of Dan-14, emigrated in 1847 with his conjugal family to Quebec, Canada, from County Sligo on one of the first “coffin ships”, and he and other members of his family died on the voyage or shortly after landing at the Canadian quarantine center of Grosse-Île. The surviving members of Bartly’s family settled in Canada, or in the northern tier of the United States.

Robert Denison, the ancestor of John G. Denison, appears to have been a poor laboring man, as were most of the many other DENNISONs found in JeffersonCo, Tennessee, where Robert himself first appears. Since all of these DENNISONs were also linked by neighborhood, it’s likely that they were all of the same extended family. Although Robert was himself born in Virginia, virtually all of the other JeffersonCo DENNISONs were born in TN, some in the 1700s, and were thus among the earliest settlers of that place. Although John_G’s haplotype is unmatched to any DENNISON, it does match to that of a Robert CLUCK: presumably then, either he or Robert Cluck, is an NPE.

David Dennison, the ancestor of Kathy-03’s husband, John W. Dennison, immigrated to the U.S. about 1867 from Midlothianshire, Scotland, the locale of the Scottish capital city, Edinburgh. However, Midlothian was also known for its coal mines, and this line of Dennisons were coal minors over several generations, both in Scotland and in the U.S.—first in Illinoise, and then in Colorado.

James Dennison, the ancestor of Terry-16, is found in the northern Virginia county of Fauquier in the late 1700s. About 1803, several of James’s sons, and perhaps James himself, migrated about 200 miles due west over the Blue Ridge and into the Appalachians, and settled in HarrisonCo, in (now) West Virginia, where Terry’s ancestors have remained almost until the present day. Although Terry’s haplotype matches none of the DENNISON patrlineages, he comes rather close to Kathy-03's, but meanwhile he has four probable patrilineage matches with men of 3 different Irish surnames. Terry has been deep clade tested and is R-M222, and thus belongs to the large so-called Niall of the Nine Hostages Celtic group that is concentrated in northern Ireland and southwestern Scotland.

Because there is only one member of each of these patrilineages, no meaningful comparisons of DNA results are possible, but the results have nonetheless been posted in a composite table below so that they can be compared to the haplotypes of other yDNA-tested DENNISONs, or others looking for a match. As soon as we are able to acquire a matching member to one of these singleton haplotypes, the newly matched pair will be split off into a new numbered patrilineage of its own.

DENNISON Singleton Patrilineage Descendancies

The following ancestral DENNISON descendancies have been contributed by DENNISON researchers with unmatched yDNA haplotypes, and are reasonably well substantiated with evidence. Each descendancy begins with the earliest known male ancestor and continues down to the tested male descendant. Since this DNA surname project is focused on tested or testable male DENNISONs, these descendancy trees have been pruned not only of daughters, but also of most male lines that are known to have gone extinct or “daughtered out”. However, in some instances complete reconstructed families of the first generation or two will be included because of their broad-based genealogical interest; in such cases males known or presumed to have died without children will be flagged “no known issue”, or “(NKI)”.

The information provided for each male DENNISON should be sufficient in most cases to uniquely identify him in the USCensus and other readily available sources. These data comprise (insofar as is known): date and place of birth, date and place of death, the name(s) of his wife (or wives) and the date and place of marriage. Indefinite dates are always qualified as either approximate (“abt”, “bef”, “aft”, or “by”) or merely guesstimated (“say”). Approximated dates imply supporting evidence that merely fails of complete accuracy, while “say” dates are guesstimates based on typical patterns of the time, place, and social group. In some places, I have adjusted dates provided by the sources to conform to these conventions, based on the evidence I am aware of.

The yDNA-tested male descendants are flagged below with their Project #s and the “handle” of the Principal Researcher, e.g.  Kathy-03).

invisible writing

1-Bartholomew Denniston of County Sligo, Ireland, born abt 1802

Sources: Dan Dennison

1-Bartholomew Denniston (abt 1802 County Sligo, Ireland - 1847 QuebecCAN)

|--m. Mary _?_

|--2-Thomas Dennison (abt 1828 - 1906 UnionCoSD)

|   |--m. 1859 Anne KEVILL

|   |--3-James B[artholomew?] Dennison (abt 1861 - 1932 UnionCoSD)—no known issue

|   |--3-Thomas A. (abt 1863 IA - 1939 IA)

|   |--3-John C. Dennison (1866 Jefferson, UnionCoSD- 1949 SiouxCityIA)

|   |   |--m. 1895 Mary CURRY

|   |   |--4-Thomas Gerard Dennison (1906 - 1976)

|   |   |   |--m. abt 1932 Garnet HAMMERSTROM

|   |   |   |--5-John Charles Dennison, father of   *** Dan-14 ***      

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1-Robert Denison of Jefferson county, Tennessee, born abt 1814, in Virginia

Sources: John G. Denison

1-Robert Denison (abt 1814 VA - [JeffersonCoTN?])

|--m. 1837 Sally/Sarah SIMPSON, in JeffersonCoTN

|--2-William A. Denison (abt 1840 TN - aft 18Jun1900 [JeffersonCoTN?])

|   |--m. 1872 Sarah SHERMAN, in JeffersonCoTN

|   |--3-Joseph Addison Denison (1877 JeffersonCoTN - 1915 SevierCoTN)

|   |   |--m. 1902 Nora Alzura CODY, in JeffersonCoTN

|   |   |--4-Sanders Garfield Denison (1908 SevierCoTN - 2002 CollinCoTX)

|   |   |   |--5-John Garfield Denison     *** John_G-15 ***      

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A-Thomas Denniston of Midlothianshire, Scotland, born abt 1818

Sources: Kathleen Dennison and John Robb.

A-Thomas Dennison (abt 1818 Midlothianshire, Scotland -)  m. Mary

|--1-David Denniston (abt 1839 Midlothianshire, Scotland - bef 1880 WillCoIL?)  m. Mary

|   |--2-Thomas Dennison (1860 Lanarkshire, Scotland - 1931 LasAnimasCoCO)

|   |   ---m. Margaret Kilpatrick

|   |   |--3-John Kilpatrick Dennison (1884 WillCoIL - OrangeCoCA)

|   |   |   ---m. Lillie Belle Nicol

|   |   |   |--4-William Archal Dennison (1911 LasAnimasCoCO - 1974 OrangeCoCA)

|   |   |   |   ---m. Thelma Keller

|   |   |   |   |--5-John Wayne Dennison  m. Kathleen Martin     *** Kathy-03 ***      

invisible writing

A-James Denniston of Fauquier and Harrison Counties, VA, born say 1740

Source: Terry E. Dennison.

1-James Dennison (say 1740 [VA?] - [abt 1820? HarrisonCoVA??])

|--m. say 1763 Nancy [ANDERSON??]

|--2-John Dennison (abt 1774 FauquierCoVA - 1824 HarrisonCoVA)

|   |--m1. 1794 Sarah NORMAN, FauquierCoVA

|   |--3-Anderson Dennison (1795 FauquierCoVA - 1875 HarrisonCo)

|   |   |--m. 1818 Eleanor SKINNER, in HarrisonCoVA

|   |   |--4-Joshua Smith Dennison (1842 HarrisonCoVA - 1917 HarrisonCoWV)

|   |   |   |--m. 1867 Elizabeth Dorothy CARTER, in HarrisonCoWV

|   |   |   |--5-David Anderson Dennison (1883 HarrisonCoWV - 1973 GalliaCoOH)

|   |   |   |   |--m. 1912 Katie Alice COPENHAVER, in KanawhaCoWV

|   |   |   |   |--6-David Karl Dennison (1916 KanawhaCoWV - 1989 StLucieCoFL)

|   |   |   |   |   |--7-Terry Eugene Dennison     *** Terry-16 ***      

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DNA Project Singleton Haplotypes

The yDNA Haplotypes

The Haplotypes Compared: Who’s closest to whom?

Other Singleton Resources

DENNISON Singleton Descendancies

Navigating from here

The menu buttons at top right take you to other pages on this site, while the nav panel above targets other points on this page, or brings up other resources (papers I’ve written, and the like). If you find yourself lost, the browser BACK button will take you back to where you were (some people also have a convenient BACK button on their mouse, right under their thumb). Or hitting the HOME key of your keyboard will take you back to the top of this page where you are now.

Some Key Terms: haplotype, haplogroup, patrilineage, RPH.

DENNISON Singleton Patrilineage Researchers

Active researchers of this DENNISON patrilineage are shown below. Those with highlighted names may be e-mailed by clicking on their names, and their posted descendancies may be viewed by clicking on their highlighted Patrilineage Project#s. Satellite members of the project are listed immediately after the principal researcher for the sublineage they are interested in, and their names are preceded by a dash. Where the person tested is not also the principal researcher, the former’s name appears under the latter’s, in parentheses.

Proj#  “Handle”         Researcher       
      (Test Subject)         		Test
Panel		 FTDNA
Kit# 
D-14 Dan Daniel Dennison
(John Charles Dennison)		 F37 189021
D-15 John_G John Garfield Denison F67 190633
D-03 Kathy Kathleen Dennison
(John W. Dennison)		 F67 N4108
D-16 Terry Terry Eugene Dennison F67 194478

All DENNISON Patrilineage Haplotypes Compared

These charts provide some idea of the closeness of relationship between the haplotypes of all of DENNISON patrilineages in the project. The first two rows (and columns) represent the the RPHaplotypes of Patrilineages 1 and 2, and the remaining ones are DENNISON Project Singletons.

The cell at the intersection of each column/row pair shows either the GD (Genetic Distance) between the pair (basically, the number of mutations), or the estimated TMRCA—the Time in years back to the Most Recent Common Ancestor of the pair (not the MRCA of the whole patrilineage). For an extended discussion of the application of these concepts, click here.

The FTDNA commentary says that two haplotypes can be considered related for genealogical purposes (meaning that they have a common ancestor within the span of genealogical time) only where the GD between two subjects is less than 6, but this is a mistake. It’s true that if the haplotype of a tested descendant had accumulated 6 mutations down through the centuries from a remote ancestor, that that ancestor would probably have lived and died before the time of surname adoption, but because the GD between two descendants is the sum of the mutations down each of their lines of descent from the founder, there might be no more than 3 mutations in each line, which is well within the relationship guidelines. In fact, a GD of up to 10 between two project haplotypes is conceivable, as long as they bear a common surname.

TMRCA provides at best a very loose estimate of the time back to the common ancestor of two patrilineal descendants. The time may be measured in generations or years, but I find the year estimate more useful. I use 34 for the number of years per generation, based on a number of published studies, as well as on an informal one of my own, and I've found that the best way to project back to an earlier ancestor is to substract the TMRCA estimate from 1950 (a notional birth year for the a typical contemporary testee) to obtain an estimate for the birth date of the MRCA of each pair of subjects. Since surnames began to become the norm in England about 1350, the typical patrilineage probably consists of roughly 20 generations back to first male ancestor of the line to adopt the common surname and pass it on to his sons.

For the TMRCA estimates below there is an equal probability that the MRCAncestor of each pair of subjects was born earlier or later than the projected date; indeed, he could quite easily have been born 100-200 years earlier or later than the value given. The following TNRCA chart is meant to provide a rough overview of the closeness of the genetic relationships between members within a time framework.

A very few surname lines may have begun as early as the 11th century, and before surnames, when families typically remained in the same place for hundreds of years, it is likely that there was some system for keeping track of cousins, and if so, when surnames were adopted, they may have been applied to relatives a couple of generations back. At the utmost, then, one might suppose that a surname line could go back, say 1000 years from 1950, or about 30 generations, and the corresponding GD might be as much as 12, across 37 markers. In marginal cases of this kind, extending the 37-marker test to 67 for both haplotypes should in most cases provide a definitive answer as to whether two such remotely related descendants bearing the same surname might possibly belong to the same genealogical patrilineage.

37-Marker Haplotype Comparison Matrices (low numbers are closest)

Genetic Distances, DENNISON Singleton Patrilineages, 37-marker yDNA GD Comparisons TMRCAs, DENNISON Singleton Patrilineages, 37-marker yDNA TMRCA Comparisons

The number in each cell is the number of divergent mutations
between each pair of haplotypes.

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What FTDNA has to say about Genetic Distance for 37-marker comparisons

DENNISON Singleton yDNA Haplotypes

The chart below shows the haplotypes for each tested project member of this patrilineage. I've decapitated most of the marker names (truncating “DYS393” to just “393”) to improve readability. The colored markers mutate slower or faster than the norm. Thus, [DYS]439 is fast, [DYS]458 is faster, and CDYa&b are blazing, while [DYS]393 is slow. Contrary to what one might think, though, it makes very little difference to the TMRCA calculation whether the markers that mutate are slow or fast. One expects most of the mutations to occur amidst the fast markers, and if slow markers mutate instead that actually increases the TMRCA a bit.

Test Subject Information FTDNA 37-Marker Panel FTDNA Markers 38-67 Additional Markers

Proj
#		  Principal
 Researcher		 Earliest Known
DENNISON Ancestor

Name, BirthYear,
BirthPlace		 3
9
3		 3
9
0		 1
9
/
3
9
4		 3
9
1		 3
8
5
a		 3
8
5
b		 4
2
6		 3
8
8		 4
3
9		 3
8
9
I		 3
9
2		 3
8
9
I
I		 4
5
8		 4
5
9
a		 4
5
9
b		 4
5
5		 4
5
4		 4
4
7		 4
3
7		 4
4
8		 4
4
9		 4
6
4
a		 4
6
4
b		 4
6
4
c		 4
6
4
d		 4
6
0		 Y
G
A
T
A
H
4		 Y
C
A
I
I
a		 Y
C
A
I
I
b		 4
5
6		 6
0
7		 5
7
6		 5
7
0		 C
D
Y
a		 C
D
Y
b		 4
4
2		 4
3
8		 5
3
1		 5
7
8		 3
9
5
S
1
a		 3
9
5
S
1
b		 5
9
0		 5
3
7		 6
4
1		 4
7
2		 4
0
6
S
1		 5
1
1		 4
2
5		 4
1
3
a		 4
1
3
b		 5
5
7		 5
9
4		 4
3
6		 4
9
0		 5
3
4		 4
5
0		 4
4
4		 4
8
1		 5
2
0		 4
4
6		 6
1
7		 5
6
8		 4
8
7		 5
7
2		 6
4
0		 4
9
2		 5
6
5		 4
4
1		 4
4
5		 4
5
2		 4
6
1		 4
6
2		 4
6
3		 6
3
5		 G
A
A
T
1
B
0
7		 Y
G
A
T
A
A
1
0
  Haplogroup R-M269
D-14  Dan Dennison Bartholomew,b. c1802,IRE 13 24 13 11 11 14 12 12 12 13 13 29 17 9 9 11 11 25 15 18 32 16 17 17 18 11 13 19 23 15 15 18 17 33 36 12 12
D-15  John G. Denison Robert, c1814, VA 13 25 14 11 11 14 12 12 12 13 13 29 17 9 10 11 11 24 15 19 31 15 16 17 17 11 11 23 23 16 15 20 17 37 37 12 12 11 9 15 16 8 10 10 8 10 10 12 23 23 16 10 12 12 15 8 12 22 20 12 12 11 13 11 12 12 12
D-03  Kathleen Dennison ThomasM,b. c1818,SCO 13 25 14 11 11 13 12 12 12 13 14 29 17 9 9 11 11 25 15 18 30 15 16 16 17 11 11 19 23 17 16 18 17 39 40 12 12 11 9 15 16 8 10 10 8 10 10 12 21 23 16 10 12 12 16 8 12 25 20 13 12 11 13 12 11 12 12
  Haplogroup R-M222+
D-16  Terry E. Dennison James, say 1740, [VA?] 13 25 17 11 11 13 12 12 12 14 14 30 17 9 10 11 11 25 16 18 28 15 16 16 17 10 11 19 23 17 16 18 17 37 38 12 12 11 9 15 16 8 10 10 8 10 11 12 21 23 16 10 12 12 16 8 12 25 21 13 12 11 13 10 11 12 12

You may click on highlighted Project#s (like D-03) to see the posted sub-lineage pedigree for a particular test subject. Click on highlighted Researcher names, like “Kathleen Denn.” to communicate with the principal researcher for that sub-lineage, or, where that person has his/her own website, to go to that website. The “Researchers” directory atop this page shows other details for each test subject, such as haplogroup and Kit#.

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Last updated 16Jan2012
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