Can Grandparents be DNA Confirmed by 1st Cousin 1x Removed, etc.

+8 votes
Instructions for DNA Confirmation seem to imply that only a First, Second, or Third Cousin can be considered to Confirm DNA relationships to a Parent, Grandparent, or Great-grandparent.  I have many 1x Removed Cousins who would seem to offer similar proof.
WikiTree profile: Harvey Ross
in Genealogy Help by Harvey Ross G2G Crew (470 points)
retagged by Ellen Smith
DNA matches with first and second cousins once removed  first cousins twice removed, aunts, uncles, half-first-cousins, etc., definitely can be used.

WikiTree doesn't endorse use of matches with people more distant than third cousins or  2C2R.
As already indicated, autosomal DNA is limited in its ability to confirm ancestors and WikiTree has recognized that.

YDNA on the other hand, can confirm much older ancestors.  However, it depends on the level of testing.  I am Co-Admin of the Ross surname project at FamilyTree and using 111 STR along with SNPs, I've got some solid results.

The core of Clan Ross has a common ancestor that lived about 1100 AD, which works out to about 31 generations ago.  So, I guess that'd be 32nd cousins or something like that.  The core of Clan Ross is Gaelic and has a number of other related surnames including Rose.  However, the majority of men (70%) in the core of Clan Ross have Ross as a surname.

I fit into the Norse-Gael branch of Clan Ross.  Our Ross common ancestor lived about 1500 AD with a range between 1300-1700 (100% Ross surname).   However, we are all distant cousins to a group of Matheson Men from the Loch Alsh area.  Their Matheson common ancestor also lived about 1550 AD (100% Matheson surname).

The most recent common ancestor for our Ross & Matheson branches lived about the year 1300 (1100-1500).

We also have a small group of MacKenzie and Bruce cousins, with a common ancestor that lived about the year 1150 AD (950-1350).  I consider the Ross/Matheson/MacKenzie/Bruce's collectively to be Highlander's (Gaelic) cousins.  We in turn all have a distant cousins from Norway with a variety of surnames.  The most recent common ancestor for our group of Norse-Gaels lived around the year 700 AD, which works out to about 44 generations ago.

I realize this doesn't answer the original question.  However, since we share the Ross surname, I figured it was worthwhile.

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