• Edward II - reign 1302/7-1327
• The Life and Times of Sir John de Botetourt - 1265-1324
• Hailes Abbey Chronicals
• Battle Of Boroughbrige - 1322
• The monumental brasses in Belchamp Walter
• Piers Gaveston - Humphrey de Bohun, 4th Earl of Hereford was a Lord Ordainer

References:

• The Bohun Family - https: //en.wikipedia.org/ wiki/Bohun_family
• The Monumental Effigies of Great Britain - Alfred John Kempe F.S.A. - 1832 - https:// archive.org/details/ gri_33125012248064/page/79/mode/1up? view=theater&q=bohun - there are also details on de Mandeville (Magnaville) and William Marshal (Temple Church)
• Humphrey de Bohun, 4th Earl of Hereford (1276 – 12 March 1322) - https:// en.wikipedia.org/wiki/ Humphrey_de_Bohun ,_4th_Earl_of_Hereford - also 3rd Earl of Essex - third creation