About William de Hamilton
"Historians have ascribed various origins to this family. Hector Boece, followed by Buchanan and other writers repeating each other, gave rise to the legend that the Hamiltons were descended from the Earls of Leicester, and the chief historian of the House, somewhat feebly and with misgivings, also takes this view. But he himself supplies evidence to the contrary, and it cannot be denied that the narratives as to the first of the Hamiltons in Scotland are either mutually contradictory or can easily be refuted on chronological and genealogical grounds. One argument for descent from the great house of Leicester was that the armorial bearings of the Hamiltons, three cinquefoils, were a variation of the single cinquefoil of the Leicester family. It is, however, pointed out by a recent writer that this argument would also hold good for a descent from the Northumbrian family of the Umfravilles, who likewise bore a single cinquefoil. The possibility of a Northumbrian origin had been suggested by an earlier writer, Mr. John Liddell, and the above armorial statement may tend to corroborate his theory, which is so far justified by the fact that there was a place named Hamilton in Northumberland. It belonged to the Umphravilles. The names of various persons named Hameldon or Hamilton are found at any early date in Northumberland and on the borders of Scotland, although no evidence has been found of any connection with the Lanarkshire family. These facts give plausibility to the theory of Northumbrian origin, although it must be admitted that these alleged origins are but legends or theories, and are, as yet, without any satisfying evidence to support them. So far as record or charter evidence is available, the first undoubted ancestor of the Hamiltons was Walter Fitz Gilbert . . . ." (James Balfour Paul, The Scots Peerage (1907), 339-40, citations omitted).
Maximilian von Liechtenstein, 1/7/2017:
According to the source "The Norman People and Their Existing Descendants in the British Dominions and the United States of America" (1874) Gislebert, Lord of Blosseville (now Blouville), Normandy, in 1086 is the last assumed ancestor of William de Hamilton. Taking into account that this argument is made by referencing contemporary sources, I wonder why the link has not been made in Geni. Of course the link to Gislebert is not entirely certain, but then again at that period in time we cannot really be completely certain of anything. So if it represents the best working hypothesis, why not include it in Geni?
Maximilian von Liechtenstein
Pam Wilson added (4 July 2017):
Text from this book, pp. 275-276:
Gislebert, Lord of Blosseville (now Blouville), Normandy, in 1086 held Newton and Brayfield, Bucks, and Harold and Falmersham, Beds, from the Countess Judith (Domesd.). William de Blosseville was of Beds 1130 (Rot Pip.). Robert de B., his son, c. 1150 granted lands at Harold, Turvey, and Lavendon to Harold Abbey. Jordan de Blosseville, brother of Robert, possessed the estates of Newton-Blosseville, &c, in Bucks, and was in 1157 Viscount of Lincoln. He probably held the office of seneschal of the great Crown demesne of Hameldon, Bucks, and thence was named 'De Hameldon' and under that name he held lands, 1165, from the see of Durham (Lib. Nig.), and in 1156 he had a Crown grant of lands in Surrey (Rot. Pip.). He had two sons: 1. Gilbert de B., who occurs in Normandy c. 1180 (MRS). 2. Thomas.
Thomas de Hameldon occurs in Northumberland (where the family had estates), 1170 (Hodgson, iii. iii. 16, 18), He had issue — 1. Robert ; 2. Roger de Hameldon, who occurs in Northumberland c. 1200 as security for the Abbot of Kelso (lb. ii. ii. 256), and in Normandy as Roger de Blosseville (MRS).
Robert de Hameldon, the elder son, occurs as a knight of Northumberland 1207 (lb. ii. ii. 148, 258). He was also Lord of Newton-Blosseville 1203-9 (Lipscombe, Bucks, It. 257), and occurs in a suit in that county 1199 (RCR). His son, Gilbert de Blosseville, or de Hameldon, was Lord of Newton-Blosseville 1254, when he sold it to another branch of the family (Lipscombe). He also possessed the estates in Surrey (Testa) ; and holding his lands from the Honour of Huntingdon, and therefore from the kings of Scotland, he received a settlement in Scotland 13th cent., and in his latter years became an ecclesiastic (Chart. Paisley). His elder son, Walter Fitz- Gilbert de Hameldon, was one of the barons of Scotland, and obtained the barony of Cadzow, afterwards Hamilton. From this line descend the Dukes of Abercom, the first Dukes of Hamilton, and many other noble families of the name.
3 June 2017:
This Website http://geneagraphie.com/ has this William listed as William de Harcourt and they have Earl Robert lll de Beaumount as his father the profile page for Earl Robert lll there has sources attached. I did not check the sources but worth looking into. I have posted the files in the sources section.