William Sancroft was the 79th Archbishop of Canterbury, and was one of the Seven Bishops imprisoned in 1688 for seditious libel against King James II, over his opposition to the king's Declaration of Indulgence. Deprived of his office in 1690 for refusing to swear allegiance to William and Mary, he later enabled and supported the consecration of new nonjuring bishops leading to the nonjuring schism.

The Seven Bishops were members of the Church of England tried and acquitted for seditious libel in the Court of Kings Bench in June 1688. The very unpopular prosecution of the bishops is viewed as a significant event contributing to the November 1688 Glorious Revolution and deposition of James II.