Son of Aelfric [father of William](Familial relationship)
- William, son of Aelfric
- From Source
3/1000/23 (Chrs. David I, no. 83)
- Firm date
- 9 April 1139 X May 1141
- Dating Notes
- Second treaty of Durham and accession to earldom of Northumberland × death of Geoffrey Rufus, bishop of Durham.