• General Notes

  Issue
  
  Eleanor de Warenne (1251–1282), married Sir Henry de Percy, by whom she had issue, including Henry Percy, 1st Baron Percy of Alnwick.
  
  Isabella de Warenne (c.1253 - before 1292), married John Balliol, and was the mother of Edward Balliol.
  
  William de Warenne (9 February 1256 - 15 December 1286). He was killed in a tournament. He married Joan de Vere, by whom he had two children, John de Warenne, 7th Earl of Surrey, and Alice de Warenne (15 June 1287 - 23 May 1338), who in turn married Edmund FitzAlan, 9th Earl of Arundel.

Details of Alice's family with John de Warenne (6th Earl of Surrey)