John Thornborough (1551–1641) was an English bishop. Life Thornborough was born in Salisbury, and graduated from Magdalen College, Oxford. In a long ecclesiastical career, he was employed as a chaplain by the Earl of Pembroke, and Queen Elizabeth. He was Dean of York, Bishop of Limerick in 1593, Bishop of Bristol in 1603, and Bishop of Worcester from 1617. He was appointed Clerk of the Closet in 1588, serving Queen Elizabeth I in that capacity until the end of her reign in 1603. He was tolerant of Puritans, encouraging his congregation to attend puritan lectures. He also shielded the future biographer Samuel Clarke (1599–1683). He wrote an alchemical book, Lithotheorikos of 1621. He is known to have employed Simon Forman. Robert Fludd dedicated Anatomiae Amphitheatrum (1623) to Thornborough. References Further reading A. L. Rowse, "Bishop Thornborough: A Clerical Careerist", in Richard Ollard and Pamela Tudor-Craig (editors), For Veronica Wedgwood These Studies in Seventeenth-Century History (1986) External links 1551 births 1641 deaths Alumni of Magdalen College, Oxford 16th-century alchemists 16th-century Anglican bishops in Ireland 17th-century alchemists 17th-century Anglican bishops in Ireland 17th-century English writers 17th-century English male writers Anglican chaplains Bishops of Bristol Bishops of Limerick (Church of Ireland) Bishops of Worcester Clerks of the Closet Deans of York English alchemists English chaplains English male writers 17th-century Church of England bishops