sentences:  As a sign of reconciliation and the ending of the Western Schism, Pope Martin V confirmed Benedict XIII's provision and retrospectively confirmed Bullock's acts as bishop on 1 February 1423, after the translation of Gruffydd Young to the titular bishopric of Hippo.Most of the details of Bullock's episcopate are obscure.On 4 September 1439, Bishop Bullock appended his seal to the contract between Joan Beaufort, Queen Dowager, and Sir Alexander Livingston of Callendar, a contract that made Livingstone guardian of the boy king, James II of Scotland.