I will say that it doesn't seem like the worst production I have ever seen. Also, as should be noted, it was written and published before there was any idea of Donald Trump, so can't be viewed as collusive to any "trumped up" claim of royal descent for the real estate magnate. The maintainer of the "Geni" pages should be contacted to verify the descent from Donald MacLeod to Mr. Trump. For what it's worth, this website below agrees in most specifics, stating of the linking generation, ... "No official record was made of the birth or baptism of Alexander MacLeod - the grandfather of Mary Anne MacLeod Trump) but, according to the ages shown for him in various sources, i.e. census returns, his marrage and death certificates, he would have been born in Stornoway around 1830. This was before the advent in Scotland of compulsory registration of these events in 1855. His death record reveals that both he and his father had been crofters and that each of his parents was also named MacLeod - William and Catherine." https://www.scottishroots.com/people/donald.php This is what Geni says about the same man: Alexander MacLeod Birthdate: May 1, 1830 Birthplace: Vatisker, Na h-Eileanan an Iar, Scotland, United Kingdom Death: Died 1900 in Tunga, Na h-Eileanan an Iar, Scotland, United Kingdom Immediate Family: Son of William MacLeod, Skerray and Catherine / Christian MacLeod Husband of Ann MacLeod Father of Malcolm (Calum) MacLeod; Ann MacLeod; Donald MacLeod; Henrietta MacLeod; Effie MacLeod and 4 others Brother of William Hall Telford, Rev., U.F. Manse, Reston; Donald Telford; John Telford; Hugh, Telford; Elizabeth Maclaucldan [sic] and 5 others https://www.geni.com/people/Alexander-MacLeod/6000000010883510348 Note that Alexander is shown with a number of (half-)siblings named Telford. This _seems_ to fit together with the passage to which Leslie first alerted us, from the MacKay book: "A daughter [of Angus MacKay] married Angus Macleod, Carnachy, and had with others Donald Macleod, an officer of the Army Commissariat, afterwards of Whitefield, near Thurso. Commissary Macleod had a daughter, Catherine, now widow of William Telford, Skerray, with issue:---Rev. William Hall Telford, U.F. Manse, Reston; Donald, married in Montreal; John married in Skerray; Hugh, died young; Elizabeth (Mrs. MacLauchlan); Mary (Mrs. Munro); Catherine; Anna; Benjamina; and Jessie." https://books.google.com/books?id=GiMNAAAAYAAJ&pg=PA255&dq=angus+macleod+carnachy&hl=en&sa=X&ved=0ahUKEwjUw9_Bx9vMAhVDyGMKHfq6C8UQ6AEIHDAA#v=onepage&q=angus%20macleod%20carnachy&f=false While this snippet doesn't mention Catherine's possible first marriage (to MacLeod), it would account for the Geni entry showing Alexander MacLeod with Telford half-siblings. As far as the two immediate earlier MacKay generations, which are barely more than names (Robert MacKay, married _____, and had Angus MacKay, married ____), this should give us some pause, but may well be correct.