Sir David Foulis (died 1642) was a Scottish baronet and politician. Life Foulis was the third son of James Foulis of Colinton, by Agnes Heriot of Lumphoy, and great-grandson of Sir James Foulis of Colinton (d. 1549). His brothers were James Foulis of Colinton, and George Foulis (goldsmith and Master of the Mint (1569–1633)). His sister, Margaret, married lawyer and king's advocate Thomas Hamilton in 1597. Goldsmith Thomas Foulis was his uncle. The family lived in Old Colinton House (later called Woodhall). Agnes Heriot, his mother, died in 1593 and is buried in the floor of Colinton Parish Church. Agnes appears to have been the sister of George Heriot a notable Edinburgh merchant. From 1594 onward, David Foulis was actively engaged in politics, and many of his letters are published and calendared in the Calendar of Scottish State Papers edited by John Duncan Mackie in 1969. Essex and a diamond ring Foulis was often in London and concerned with the receipt of an annuity or subsidy from Queen Elizabeth. He made friends with Anthony Bacon, a client of the Earl of Essex. In his letters, he referred to Essex as "Plato." On 1 July 1594, he received £4,000 sterling for James VI. His uncle, the goldsmith and royal financier Thomas Foulis, made an account of the spending of this money for James VI, along with the tax money on his gold mines, money coined at the royal mint by Thomas Acheson, and £680 Scots received from the Secretary, Richard Cockburn of Clerkington in December 1594, with another £3,000 received by David Foulis at London in August 1595. Foulis himself received £1000 (Scots) from the subsidy for the expenses of his journey to London. Foulis wrote to Anthony Bacon about the arrival in July and August 1594 of the ambassadors for the baptism of Prince Henry. Foulis (and the English ambassador Robert Bowes) heard of discussions that Anna of Denmark's sister Augusta might marry Count Maurice. After the baptism he went to the north of Scotland with James VI. He wrote to Essex that the king had pawned his jewels for £2,000 sterling to fund this military mission, and declared that no house where the Catholic Mass has been said would remain standing. Foulis reported on demolition works at Huntly Castle while the Countess of Huntly looked on, and destruction at Slains, in a letter to Anthony Bacon. On 8 July