Abbud is an Old English masculine name derived from abbud, a variant form of abboda ‘abbot’.
The only entry in the PASE corpus prior to Domesday is that for Abbud 1, a late ninth- or early tenth-century priest associated with Sherborne.
Spellings in Domesday Book: Abet
Spellings in Exon: Abbetus
Forms in modern scholarship:
von Feilitzen head forms: Abbud
Phillimore edition: Abbot
Alecto edition: Abbud