Oslac ealdorman of York from around 963 to 975. His territory included but may not have been limited to the southern half of Northumbria. His background is obscure because of poor source documentation. The latter has facilitated disagreement... Wikipedia
Great grandchildren: Edmund Ironside, Æthelstan Ætheling, Ælfgifu, and more
Children: Thored
Grandchild: Ælfgifu of York