[2] He must have trained as a canon lawyer, in view of his duties as archdeacon and the books which survive from his library.
[1] As archdeacon, he was the archbishop's senior administrator, both in ecclesiastical matters and at the national political level where he took part in diplomatic missions for King Henry VIII, often in association with Cardinal Thomas Wolsey.
[1] Although he was not a priest (acquiring a papal dispensation to allow him to hold his offices), he accumulated many additional benefices and offices, including: He is also on record as being the patron of the Poor Priests Hospital, Canterbury, with the church of St Mary (1528), and as patron of Westhithe (1531), and of St Clement's, Sandwich, (1531).
He appears to have occupied an important residence at St George's Chapel, Windsor.
William Warham died in October 1557, according to the dates of appointment of his successors to the canonries of St Paul's and Exeter.