Complex sentence: Graves, 2008 He was a member of the King's council before May 1516, and on 4 December 1522 was made Lord Treasurer upon his father's resignation of the office.
Split into simpler sentences: Graves, 2008 He was a member of the King's council before May 1516. On 4 December 1522 was made Lord Treasurer upon his father's resignation of the office.