Origin of the surname:
SIZEMORE (Eng.) Descendant of Sigmar (victory, great) dweller on the Saxon's wasteland.
When I checked the LDS IGI for England (Jan/Feb 1988) many years ago, I found numerous pages of records. There were 44 spelling variants of SIZEMORE. The earliest record was dated 1556 and largest concentration of the surname was in the county of Gloucester.
However, we do have a mixed bag of results that does need explaining. The largest group in our DNA test results is Haplogroup Q. This haplogroup designation has been confirmed with SNP tests of several of our participants. It is found in Native Americans and in Europe. In addition to our main Q group, we have received results for three of our participants that also have SNP confirmed Hg Q but do not match the main group.
In order to be sure our markers are consistent with the Native American markers, our main group participants were joined to the FTDNA Q3 Native American project. The three non matching participants and a few of the main group participants were joined to the FTDNA Q project.4 The administrators of both projects have concluded our participant’s markers are most consistent with the Native American markers, which means they are all descendants of a MALE Native American, but not the same Most Recent Common Ancestor.
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Note: The name Sizemore is historically found in proximity to some Melungeon core families and thus of interest to Melungeon studies; however, Sizemore is not considered to be a Melungeon core family name by most authorities.