William Butler matriculated as sizar from Peterhouse, Lent 1557/8, BA 1560/1, MA 1564, Fellow 1561. He was elected a fellow of Clare in 1572. Despite no formal qualification in medicine, he gained a significant reputation within the medical community; he is known to have acted as physician to James I. Widely considered an eccentric, his restorative techniques were uniquely imaginative. He is said to have once revived a man suffering from an opium overdose by putting him inside the chest cavity of a recently-slaughtered cow, and cured another patient of a fever by having him thrown off a balcony into the Thames. He died 29th January 1617/8 and is buried at Great St Marys, Cambridge.
Extract from Lempriere's Universal Biography , 1808: 'Butler, William, a physician, of Ipswich, educated at Clare Hall, Cambridge, He practised at Cambridge without a degree, but the oddity of his manners, and the bold method with which he treated his patients often successfully rendered him a favourite in his profession. Some anecdotes of him are recorded, which exhibit him more as a capricious boy or a madman than a man of sound sense. He died 1618 aged 82. He left no writings behind him'.