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 Darien, CT |
Y-DNA
You can use Y-chromosome DNA to help build-out the family tree of paternal lineages from modern times back into medieval times and ancient times.MGS sponsors a Middlesex Genealogical Society project at Family Tree DNA for members who have had Y-chromosome DNA tested at Family Tree DNA for themselves and relatives. The goal of the project is to share DNA information with other members, help members understand their testing results, and suggest avenues for further testing. Only males have a Y chromosome.
Following is a summary of mutations discovered by MGS members who have tested their own or a male relative's Y-DNA. Testers who share a common ancestor are called a haplogroup. The common ancestor has passed on to them a unique SNP (single nucleotide polymorphism). All happen to have a common Celtic ancestor with a mutation named DF13, born in 2500 BC in England: R-DF13 (see the map below for earlier haplogroups). Most testers below have done "Big Y" SNP testing and have SNPs down to a more recent time (800 to 1850 AD). SNPs of the others are projected by Peter Biggins based on STR (short tandem repeat) matches with other testers. Click on underlined SNPs to see Family Tree DNA comments about the SNP.
| Y-DNA mutations, called haplogroups, or SNPs (single nucleotide polymorphisms) | ||||||||
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R-M173 (20000 BC, Kazakhstan) - branches to Viking M343 (17000 BC, Uzbekistan ) M269 (4450 BC, Southern Russia) L151 (3050 BC, Ukraine) - branches to Saxon and Celtic P312 (2850 BC, Southern Germany) - Celtic L21 (2650 BC, Southern England) DF13 (2500 BC, England) | ||||||||
| Z39589 (2450 BC, England) The Scoti |
DF21 S971 Z3000 Z3008 (450 AD, England) The Three Collas |
Uí Fáilghe FGC5494 FGC5561 A1149 A1148 A1308 A6342 A1309 (1750 AD) |
Eóganachta, Ireland FGC11134 A353 Z16250 CTS4466 Irish II S1115 FGC84010 A541 S1121 Z16253 A159 BY2881 BY149 (500 AD) |
Ulster-Scots L513 S5668 A7 Z21263 S7834 BY13843 BY135613 (1500 AD) |
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DF49 Z2980 Z2976 DF23 Z2961 M222 Connachta Z2959 (50 BC) |
Dál Riata L1335 L1065 Z16325 S744 Y16858 Y17075 PF5236 FT219046 BY210693 BY183488 (1350 AD) |
DF41 Z43690 S775 Royal Stewarts A600 BY23501 (800 AD) |
Colla Uais, Ulster S953 ZZ13 FT14481 BY3164 (1350 AD) |
Colla da Crioch, Ulster FT14355 Z16274 Z16276 Z16278 BY43649 (1500 AD) |
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BY35297 FGC4077 A725 BY18039 BY53879 BY110104 BY65795 (1650 AD) |
S658 DF104 DF105 A18726 A259 A260 BY3338 FTT170 BY11723 FT89237 (1450 AD) |
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| Matches with Other Testers - 67 STRs (short tandem repeats) | ||||||||
| 449 | 217 | 58 | 4 | 107 | 426 | 31 | 310 | 145 |
| Most Distant Known Ancestor, birth year, birth place | ||||||||
| Frank Byrne 1810-20 Killybegs, Co. Donegal |
John O'Flynn | Denis Christy 1722 Northern Ireland |
William Mathews 1644 Wales |
Patrick Beggan 1807 Drumgill, Co. Cavan |
James Clarkin 1799 Ireland |
John Kenyon 1600 United Kingdom |
John H. Driscoll 1824 Kilbonane, Co. Cork |
Peter Gallagher, Co. Donegal |
| Tester and Kit Number | ||||||||
| Michael Burns 886138 |
Stephen Flynn B251817 |
Len Christie 75787 |
Marc Matthews 116493 |
Peter Biggins 127469 |
John Clarkin 939733 |
Pete Kenyon 176456 |
John Driscoll 294201 |
John Gallagher 578931 |
|---|---|---|---|---|---|---|---|---|
Y-chromosome DNA is inherited male to male like surnames. Family Tree DNA is the biggest Y-DNA tester and has public results pages for surnames and DNA types. The best test is Big Y, which costs about $400 on sale. A lesser test is Y-67.
Test yourself if you are a male, and any male relative whose ancestry you want to learn more about.
Join a surname project at FTDNA. If there is none for your surname, consider starting one. When you get information about what kind of DNA the tester has, join a haplogroup project. And don't forget to join the Middlesex Genealogical Society Project.
Y-DNA testing is going to tell you about your distant ancestry rather than fill in your family tree. You are not very likely to find people for your family tree because only a small percentage of people have had their DNA tested. Many people gain insight into their distant ancestry.
If you would like to learn more about DNA testing, see our MGS Presentations of November 18, 2017, "Understanding DNA in Genealogy" and October 6, 2018, "Y-DNA and Genealogy." Or, contact Peter Biggins at: pabiggin@optonline.net
 Migration from "Adam" in Africa to R in Asia to R-DF13 in England. Source: Family Tree DNA |
Family Tree DNA provides a public results chart for male members and male relatives who have joined the MGS project at FTDNA. Under Haplogroup and in the subheadings, you will see the names of SNPs (single nucleotide polymorphisms, or mutations) that have been found. To the right of Haplogroup, you will see the values of STRs (short tandem repeats) for up to 111 markers.
Portions of this tree are attributable to Myths, Legends and DNA, an attempt to reconcile the current archeological evidence and genealogical DNA evidence with Ireland's mythical origins, by N. J. Sharkey, 2023 revised.
Contact Peter Biggins if you have any questions about Y-DNA or testing Y-DNA:
- Email: pabiggin@optonline.net
- Phone: 203-655-3694