• Born: 1311, Caldecot, Northill, Bedfordshire, England
• Married: 1335
• Died: 16 Sep 1360, Caldecot, Northill, Bedfordshire, England
• Buried: Walden Abbey, Saffron Walden, Essex, England

  Research Notes:

A manuscript which narrates the descents of the founders of Lanthony Abbey names (in order) “Margareta…Humfredus…Johannes…Humfredus decimus…Edwardus et Willielmus…Alianora, Margareta secunda, Eneas, Isabella” as the six sons and four daughters of “Humfredus octavus de Bohun, comes Herefordiæ et Essex, constabularius Angliæ et dominus Breconiæ” and his wife “Elizabetham filiam regis Edwardi filii regis Henrici tertii”, adding that Edward and William were “nati ad unum tempus” and that King Edward III invested William as Earl of Northampton after the death of his brother John. The History of the foundation of Walden abbey records the birth “apud Caldecot” of “duo gemelli…Edwardus et Willielmus” to “Humfridus de Bohun” and his wife “Elizabethæ…regis Angliæ Edwardi…filiæ”.

Twin with his brother Edward.

He was created Earl of Northampton 16 Mar 1337. His brother Humphrey granted him the office of Constable of England for life 12 Jun 1338.

A manuscript which narrates the descents of the founders of Lanthony Abbey records the death of “Willielmus de Bohun…comes Northamtoniæ et constabularius Angliæ” 16 Sep 1350 (an error in the document, corrected when the text records the death of William’s brother Humphrey in 1361 “unum annum, unum mensem et quinque dies” after his brother died) and his burial “apud Waldene”. ¹