He held a number of public offices and was appointed High Sheriff of Wiltshire (1578–79) and a deputy-lieutenant of Wiltshire. He was elected Member of Parliament for Wootton Bassett in 1571 and 1572, for Malmesbury in 1584 and 1586, Wootton Bassett again in 1589 and finally Malmesbury again in 1593 and 1597. He was knighted in September 1574.[2]
He married firstly in 1563, Elizabeth, the daughter and sole heiress of wealthy clothier Sir James Stumpe of Malmesbury, with whom he had two sons and four daughters. She brought him the manor of Charlton Park, where he commenced the building of Charlton House.
He married secondly, by June 1595, Mary, the daughter of Sir John Sydenham of Brinton, Somerset and the widow of John Fitz of Fitzford, Devon.
He was succeeded by his surviving three daughters, Katherine (who inherited Charlton Park and eventually became Countess of Suffolk), Elizabeth and Frances. All three married earls.
He also had an illegitimate son, Anthony Knyvet, pirate, slave and slave trader.[3]
^Hitchcock, Richard (1 April 2004). "Samuel Purchas as Editor: A Case Study: Anthony Knyvett's Journal". The Modern Language Review. 99 (2): 301–312. doi:10.2307/3738747. JSTOR3738747.
^John Nichols, Progresses of James the First, vol. 1 (London, 1828), pp. 488-9.
^Memorials of Affairs of State from the papers of Ralph Winwood, vol. 2 (London, 1725), p. 141.