
DNA Group N: County Mayo, Ireland
Xref Project Status Rowland DNA Group N
This line has its origins in County Mayo, Ireland. The members of the former Group G (Chicago from Ireland) were merged into this group.

Red shading indicates a conflict between the DNA and WikiTree
Haplogroups in green are confirmed by SNP testing, while haplogroups in red are predicted
Descendant Trees
Earliest Known Ancestor #1
- Thomas Rowland (1830-1894) was born in County Mayo, Ireland, and died in Schuylkill County, Pennsylvania, United States. He married Matilda McDermott.
- 10 descendants in WikiTree (as of 31 Dec 2025)
- Descendant locations in WikiTree: Ireland (Mayo), California (San Diego), Pennsylvania (Lackawanna, Schuylkill)
Earliest Known Ancestor #2
- Thomas Rowland (1770-1837) was born in County Mayo, Ireland, and he died there also. Little is known about him.
- 26 descendants in WikiTree (as of 31 Dec 2025)
- Descendant locations: County Mayo, County Tipperary
Earliest Known Ancestor #3
- Michael Rowland (1805-1881) was born in Ireland and died in Oneida County, New York.
- 9 descendants in WikiTree (as of 31 Dec 2025)
- Descendant locations: New York (Oneida)
Group M Cladogram

Information on how to construct and interpret a cladogram is located in Rowland YDNA Cladograms.
Articles
Downloadable Documents
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Other Resources
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Group Notables
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