History of Clan Davidson
The following was primarily extracted from the book Clan Davidson compiled by Alan McNie. Much of it has been confirmed by further research by the Clan Davidson Association (UK) in the 1990s. In addition to the Clan Davidson Association in UK (reestablished in the 1980s), there are Clan Davidson Societies In North America (established in the 1970s); Australia (established in the 1980s); and in New Zealand (established in the 2000s).
According to the Highland manuscript believed to be written by one MacLauchlan, bearing the date 1467, and containing an account of the genealogies of Highland clans down to about the year 1450, which was accepted as authoritative by Skene in his Celtic Scotland, and believed to embody the common tradition of its time, the origin of the Davidsons is attributed to a certain Gilliecattan Mhor, chief of Clan Chattan in the time of David I (1085 – 1153).
This personage, it is stated, had two sons, Muirich Mhor and Dhai Dhu. From the former of these was descended Clan Mhuirich or MacPherson, and from the latter Clan Dhai or Davidson.
Sir Aeneas MacPherson, the historian of the clan of that name, states that both the MacPhersons and the Davidsons were descended from Muirich, parson of Kingussie in the twelfth century.