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.

Blue shading indicates new/change from a prior update
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.

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    Group Notables

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