William Killigrew (Chamberlain of the Exchequer)

Sir William Killigrew (died 1622) of Hanworth, Middlesex, was a courtier to Queen Elizabeth I and to her successor King James I, whom he served as Groom of the Privy Chamber. He served as a Member of Parliament at various times between 1571 and 1614 and was Chamberlain of the Exchequer between 1605 and 1608. Several of his descendants were also royal courtiers and many were buried in Westminster Abbey.

Killigrew was the fifth son of John III Killigrew (d.1567) of Arwenack, Cornwall, the first Governor of Pendennis Castle, situated on land within the Arwenack estate, appointed by King Henry VIII. His mother was Elizabeth Trewennard, 2nd daughter of James Trewennard of Trewennard, in the parish of St Erth, Cornwall. The monumental brass of John III Killigrew (d.1567) survives in St Budock's Church, near Arwenack.

In 1571 he was elected Member of Parliament for Grantham in Lincolnshire and in 1572 he was elected MP for Helston in Cornwall. He became feodary and escheator for the Duchy of Cornwall and Constable of Launceston Castle in 1576 by which year he was Groom of the Privy Chamber to Queen Elizabeth I. In 1578 he was farmer of the profits from seals in the Court of Queen’s Bench and the Court of Common Pleas. He was commissioner for musters for Cornwall by 1582 and was a Justice of the Peace for Cornwall from 1583 to 1587. In 1584 he was elected MP for the Killigrew pocket borough of Penryn. He was receiver for Devon and Cornwall by 1588 and was commissioner for goods from Madre de Dios in 1592. In 1593 he was elected MP for Fowey in Cornwall. He was commissioner acting treasurer of the chamber in 1595 and commissioner for goods from Cadiz in 1596. In 1597 he was elected MP for the prestigious county seat, Cornwall.

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