Mary Bateson,
Dictionary of National Biography…
(1895)
“ OSGAR, OSCAR, or ORDGAR (d. 984) , abbot of Abingdon, was one of the clerks who left Dunstan's community at Glastonbury to go with Æthelwold [q. v.] when he was appointed abbot of Abingdon (Hist. Abingdon, ii. 258) . He was sent by Æthelwold to Fleury on the Loire to learn the Benedictine rule, and returned with a written account of it. When Æthelwold became bishop of Winchester (963) , he appointed Osgar his successor in the abbacy of Abingdon. ”
