DNA research


Clan Fergusson Society of North America run the Fergusson DNA Project.

“It is improbable that the Fergussons had any single common origin. As far back as we can find enough evidence on which to base theories, we notice at least five main groups of Fergusson existing independently – two in the south-west, one in Argyll, one in north-eastern Perthshire and Angus, one in Aberdeenshire – not to mention others in Balquhidder and Strathyre, in Fife, and in Ross-shire. these groups were so widely separated that they never could and, in fact, never did regard themselves as one clan in the same sense as, for example, the Campbells, Macdonalds and Macleans of the Isles, Macleods, Grants or Munros.” [Sir James Fergusson of Kilkerran, The Fergussons, 1956]

Knox in his History of Mayo (Ireland) tells us that O’Fergus held the parish of Burrishoole in 1303. In county Leitrim, Ireland the Erenachs of Rossinver were the Fergusons or O’Fergusas. There is good reason to believe that not all Fergusons originate in Scotland.

Consistent with the above statements, the Fergus(s)on DNA Project has to date identified no less than twenty different genetic groups of men whose name is Fergusson, Ferguson or Fergus. Furthermore some of these groups are so old that they include persons of many surnames. Within those groups multiple Fergus(s)on families originate who today are no more related to one another than they are to persons of the other names that sprang from that same group.







  • Foremost among our goals is use of DNA as a tool to supplement   conventional genealogy. The comparisons made with other participants is very   strong at showing two people are unrelated providing then a means of   discovering errors.
  • Create a database of DNA corresponding to different Scottish and   Irish subdivisions such as those discussed in Records of the Clan and Name   of Fergusson, Ferguson and Fergus, by James Ferguson and Robert Menzies   Fergusson, Edinburgh, 1895.
  • See if a linkage can be established between Irish and Scottish   Fergus(s)ons. Due to a lack of records, Fergus(s)ons of Irish descent are   generally unable to demonstrate that their ancestors emigrated from Scotland to   Ireland as is generally assumed.
  • Develop a means for African American Fergus(s)on to pursue their   genetic ancestry.
  • Support autosomal aDNA testing for persons with a Fergus(s)on in   their pedigree at five generations or less.
  • Provide a gateway to ordering a mitochrondial mtDNA test for persons   with a female Fergus(s)on in their direct maternal line

How to Participate

To find out how to participate in the Fergus(s)on DNA Project, visit the Fergus(s)on DNA Project website

Fergus(s)on DNA Project

Or contact

Colin Ferguson moc.liamgnull@eigref.niloc Administrator yDNA, Website
David Fergusson moc.liamtohnull@ylimafnossugref Co-Administrator SNP
John F Smeltzer ten.tsacmocnull@reztlemsnhoj Co-Administrator Family Finder