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The Montgomery Surname DNA Project includes at least 16 distinct lineages. Each lineage includes at least 2 men with the Montgomery surname and has members who share a common ancestor in the era of Surnames, in the Montgomery case surnames were used as early as the 900s in Normandy France, the 1000s in England and the 1100s in Scotland. For lineages with a Big Y tester the progenitor or founding common ancestor's approximate birth year is provided.
Lineage A is the J2 (J-M172) Montgomery lineage with the Haplogroup J-Z35783 dated about 1250 CE, when Clan Montgomery was in Renfrewshire and Ayrshire, Scotland. Men with this haplogroup appear to be descendants of Philip "the Welshman" whose son Robert is considered the first Montgomery Clan Chief. Based on the date for J-Z35783 he may be Sir John Montgomery, 7th Lord of Eaglesham who died in 1328. More than 100 Montgomery men have this Big Y Haplogroup and many more have the J1 (J-M172) haplogroup implying they descend from J-Z35783. Men in Lineage A are recommended to join the J-Z35794 "Montgomery of Scotland" Founder Project to see more refined Branch delineation.
Subdivisions of Lineage A include branch BY140494 founded about 1500, the J-FT167382 Braidstane branch founded about 1400 by Robert Montgomerie 1st of Braidstane, the J-FTB97474 Hessilhead Branch founded about 1450 by Hugh Montgomerie of Hessilhead, the J-FTT143 Giffen branch founded about 1450 and branch Y39343 founded about 1350. The last group in Lineage A is men who have not yet upgraded to Y700. Upgrading will identify which existing branch of Lineage A you belong to or form a new branch of Lineage A.
Lineage B was founded about 1600 and is the R-BY194967 Branch of R-BY3374. Most R-BY194967 Lineage members have the Montgomery surname and there is at least one Muir and one Moore. The parent haplogroup R-BY3374 has Muirs who trace to Ayrshire, Scotland near Clan Montgomery in Lineage A. More than 50 Montgomery men have the R-BY194967 Haplogroup and many more R-M269 men at the lower level of testing belong to this lineage. Men in Lineage B are encouraged to join the Muir (BY3374 and subclades) Y DNA Project for further clarification. The Montgomery branches are Groups beginning with E01b.
Lineage C is composed of I1 (I-M253) Montgomery men with Haplogroup I-FT140601 founded about 1750. At least 19 Montgomery men have the haplogroup. It includes descendants of John Montgomery of Chester County, Pennsylvania b 1695 and Alexander Montgomery who died in 1784 in Orange County, North Carolina.
Lineage D is the R-BY35026 Haplogroup founded about 1600 whose branches include descendants born in County Tyrone and County Cavan as well as descendants of Humphrey Montgomery of Pennsylvania and "Boyne Water" Montgomery of Delaware.
Lineage E is the I2 (I-M223) Montgomery line founded about 1700 which includes descendants of John Montgomery 1718-1808 of Londonderry, Northern Ireland who died in Carlisle, Pennsylvania.
Lineage F has the R-FT340360 Haplogroup founded about 1700 and includes descendants of Robert Montgomery of Washington County, Virginia.
Lineage G has Haplogroup R-BY180303. It was founded about 1700 and members descend from Alexander Montgomery born in Derry, Northern Ireland in 1665.
Lineage H is the R-BY56979 Haplogroup founded about 1750. Founder is Peter Montgomery born in France who died in Charles County, Maryland in 1754.
Lineage I is the R-FT82031 Haplogroup founded about 1500 which includes descendants of William Montgomery of Brigend, Scotland who died in Monmouth, New Jersey in 1721 and Samuel Montgomery who died in South Carolina in 1751.
Lineage J was founded about 1500, Haplogroup R-FT357676, identified with Montgomery brothers from Ulster who immigrated to Fairfield County, South Carolina and Edward McGlamery who died in Maryland in 1721.
Lineage K has Haplogroup R-FT360190, founded about 1800, and includes descendants of Stewart Montgomery 1784 who died in Alabama.
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Lineage L has Haplogroup R-BY92639 and was founded about 1550.
Lineage M has Haplogroup R-FT22493, descendants of William Montgomery b 1813 North Carolina. Haplogroup founded about 1900.
Lineage N has Haplogroup R-FTD95534, descendants of James Montgomery b 1798 Ireland d 1872 West Virginia. Haplogroup founded about 1900.
Lineage O has Haplogroup R-FTC36994, founded about 1850, possibly Gregory surname.
Lineage P has Haplogroup R-FTC15079, founded about 1650, includes descendants of James Montgomerie b 1771 in Ireland and Henry Montgomery b 1838 in Lancaster, Pennsylvania.
Other groups in the Montgomery Surname Project
Recommend Big Y test to learn more Members of this group may possibly match an identified Montgomery lineage but require a Big Y to confirm. They do not match each other.
Recommend Y test to learn more Members of this group have only taken a Family Finder test which is insufficient to determine whether they belong to a Montgomery lineage. Taking a Y test will confirm their Family Finder Haplogroup and identify Y DNA matches.
Upstream of a Montgomery Group, Big Y tested with a different Surname Members of this group do not have the Montgomery surname, have taken a Big Y and are more distantly related to a Montgomery lineage. Their Big Y haplogroups are "upstream" of a Montgomery lineage and match other men with their surname or another surname that isn't Montgomery.
Y DNA does not match another Montgomery at the testing level Members of this group either match no Montgomery at the Y700 level of testing or match no other Montgomery at the lower level of their test (Y12-Y111).