Aldfrith was married to Cuthburh, sister of King Ine of Wessex; the marriage thus allied Aldfrith with one of the most powerful kings in Anglo-Saxon England. The "Anglo-Saxon Chronicle" records that Aldfrith and Cuthburh separated, and Cuthburh established an abbey at Wimborne Minster where she was abbess. At least two sons were born to Aldfrith, but whether Cuthburh was their mother is unrecorded. Osred, born around 696 or 697, succeeded to the throne after a civil war following Aldfrith's death. Little is known of Offa, who is presumed to have been killed after being taken from Lindisfarne in 750 on the orders of King Eadberht of Northumbria. Osric, who was later king, may have been Aldfrith's son, or alternatively the son of Aldfrith's half-brother Alhfrith. The 13th-century discovery of a tomb thought to be that of St Osana has led to the suggestion that Osana was the daughter of Aldfrith, although this view is not widely held by modern historians.