John Duckett belonged to the Wiltshire branch of an old Westmorland gentry family. His grandfather, who hailed from Flintham, Nottinghamshire, acquired the Wiltshire manor of Trowbridge Dauntsey through a marriage settlement with the widow of Charles Dauntsey.
Duckett’s father was a freeman of the London Mercers’ Company, and his uncle, Sir Lionel, was one of the more prominent Merchant Adventurers who invested considerable sums in journeys to discover a North-West Passage.
In August 1608 Duckett was appointed captain of a company of foot, part of Sir Henry Bayntun’s* regiment, replacing the recently deceased incumbent. He was still holding the post in 1611 when he was reported to be unable to muster due to a broken leg.
In serving Calne in Parliament, Duckett emulated his father Stephen (1584, 1586) and brother Lionel (1601), and like them his work in the House was inconspicuous.
Duckett’s second marriage, in 1619, allied him with the Winter family, who sided with the king during the Civil War. Duckett himself served as a colonel in the king’s army, and is said to have escaped a siege of his country seat, Calstone House, which was burned down soon afterwards, by hiding in a coffin as it was passed through enemy lines.
