In the seventh scene of The Bayeux Tapestry, a mysterious woman by this name appears to be being struck in the face by a clergyman. No one knows who this woman is or to what the scene refers.
Aelgifu, also known as, Ælfgifu, Alfgifu, Alfgitha or Elfgifu, was a daughter of Ælfhelm, Earl of York, who was murdered on the command of Ethelred the Unready, the King of England.
The name was also given as a royal title to Aethelred's second wife Emma of Normandy (who later married King Cnut) in honour of Aethelred's grandmother St Aelfgifu.