Sir Robert Killigrew (1580–1633) was an English courtier and politician who sat in the House of Commons at various times between 1601 and 1629.
[1] In June 1612, Killigrew was noted as "one of Carr's favourites" according to John Chamberlain.
Having become famous for his concoctions of drugs and cordials, he was at first suspected of complicity in the death of Sir Thomas Overbury in September 1613, but was subsequently officially exonerated.
In July, he was appointed Keeper of Pendennis Castle, Falmouth, Cornwall, and a JP that same year.
In 1622 he succeeded his father to become farmer of the profits from seals in King's bench and common pleas which was worth at least £560 a year.
In 1628 he was elected MP for Bodmin and sat until 1629 when King Charles decided to rule without parliament for eleven years.