Events
Date of Birth: unknown.
Place of Birth: unknown.
Date of Death: 1296.
Place of Death: the siege of Berwick.
The place and date are given by Parsons, citing Leland.
Relationships
Father: Richard of Cornwall, earl of Cornwall.
Mother: Joan.
These relationships are given by Cecil, who discusses the evidence at length. Vincent gives Richard's father.
Spouse: Joan.
This relationship is given by Cecil. According to the 1623 Visitation of Shropshire, Joan is the daughter of John Fitzalan of Clun and his wife Isabel Mortimer.
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)
Sir Edmund de Cornwall (died 22 March 1354) married Elizabeth de Brampton.
Sir Geoffrey de Cornwall (died 1335) married Margaret de Mortimer.
References
Cecil G.S., 4th Earl of Liverpool, and Compton Reade. The House of Cornewall. (1908)
Parsons, John Carmi. post to soc.genealogy.medieval dated 10 September 1998.
Vincent, Nicholas. "Richard, first earl of Cornwall and king of Germany" in The Oxford Dictionary of National Biography (2004).