A genealogy survives which makes Alhred a descendant of Ida of Bernicia through a son named Eadric.

Symeon of Durham's Historia Regum Anglorum reports that he fled to the kingdom of the Picts, where he was received by King Ciniod.

The mission of Saint Willehad, which led to the founding of the Archbishopric of Bremen, was authorised by a religious assembly called by Alhred.

A letter from Alhred to Saint Lull, Archbishop of Mainz, a native of Wessex, also survives.

A second son, Alhmund, would be killed in the reign of Eardwulf and develop a cult as Alcmund of Derby.