A manuscript which narrates the descents of the founders of Lanthony Abbey names “Humfredus tertius de Bohun et Matildis” as the children of “dominum Hunfredum de Bohun secundum” and his wife “Matildem filiam Edwardi de Salesbury”. His birth date is estimated from his holding the position dapifer from 1131.
He succeeded his father, recorded in the 1129/30 Pipe Roll as paying relief on his land. The 1130 Pipe Roll records "Vnfr de Bohun" in Dorsetshire and in Wiltshire (one of which entries records “Unfrid de Bohun” rendering account as relief for “terre patris sui”). "…Humphrey de Bohun dapifer…" witnessed the charter dated [Aug] 1131 under which King Henry I confirmed donations to Bec abbey. As steward [dapifer], he witnessed King Stephen's 1136 Charter of Liberties. He was steward of King Stephen from 1136 to 1139, but later supported Empress Matilda as shown by the following charter. "M. imperatrix, Henrici regis filia et Anglorum domina et Henricus filius comitis Andegavie" confirmed the rights of "Unfrido de Buhun" in the lands he held on the death of her father "et dapiferatum suum in Anglia et Normannia" by charter dated to [1142/46]. The 1155 Pipe Roll records "Hunfr. de Buhu" in Wiltshire. The 1156 and 1157 Pipe Rolls record "Hunfr de Buhun" in Wiltshire, "in Melchesha" yielding £48, in "Bradeford" £40. “Humfridus de Bohun regis dapifer et Marger. uxor mea” founded Farleigh Priory by undated charter.
The 1164/65 Pipe Roll records "Hunfr de Bohu" owing ".ccc. m p Releuio terre patris sui" in Wiltshire, which implies that Humphrey senior had recently died. 1
---------------------------------------
Humphrey de Bohun was steward and sewer to King Henry I. This feudal lord m. Margery, dau. of Milo de Gloucester, Earl of Hereford, Lord High Constable of England, and sister and co-heiress of Mable, last Earl of Hereford of that family. At the instigation of which Milo, he espoused the cause of the Empress Maud (Matilda) and her son against King Stephen, and so faithfully maintained his allegiance that the empress, by her especial charter, granted him the office of steward and sewer, both in Normandy and England. In the 20th Henry II, this Humphrey accompanied Richard de Lacy (justice of England) into Scotland with a powerful army to waste that country; and was one of the witnesses to the accord made by William, King of Scots, and King Henry as to the subjection of that kingdom to the crown of England..... 2