Source: Wikitree.com - (Bohun-3) - Humphrey VIII Bohun
  Date of Birth: ~1276
  Place of Birth: Pleshey Castle, Essex, England

File: Princess Elizabeth Plantagenet _ Royal Descent
  Date of Birth: 1276

Source: Wikitree.com - (Bohun-3) - Humphrey VIII Bohun
  Date of Death: 3/16/1322
  Place of Death: Battle of Boroughbridge

Source: File: Princess Elizabeth Plantagenet _ Royal Descent
  Date of Death: 1322

File: Elizabeth Plantagenet, Princess of England (1282 - 1316)  Our Family Histories
  Date of Birth: 8/7/1282
  Place of Birth: Rhuddlan Castle, St. Asaph, Flintshire, Wales

File: Princess Elizabeth Plantagenet _ Royal Descent
  Date of Birth: 8/7/1282

Source: Margaret de Bohun
  Date of Birth: 4/3/1311

File: Sir. Edward Courtenay, Knight (Abt 1329 - Bef 1371)  Our Family Histories
  Date of Birth: 4/3/1311
  Place of Birth: Caldecot, , Norfolk, England

File: Princess Elizabeth Plantagenet _ Royal Descent
  Date of Birth: 4/3/1311

Source: Margaret de Bohun
 

File: Lady Margaret de Bohun _ Royal Descent
  Date of Death: 12/27/1391
  Notes: She died on Wednesday, 27 December last” [Buckinghamshire IPM, taken at Aylesbury 14 Feb. 1392
  Burial: Place: Exeter Cathedral, Devon
  Notes: And was buried near her Husband in the Cathedral-Church of St. Peter in Exon; and in the Body of the Church, near the South Ile, ftands erected a fair Altar Monument, with Effigies of both of them lying upon it.

File: Sir. Edward Courtenay, Knight (Abt 1329 - Bef 1371)  Our Family Histories
  Date of Death: 12/16/1391
  Place of Death: Exeter Castle, Exeter, , Devonshire, England