William Stephen Poyntz

William Stephen Poyntz (20 January 1770 – 8 April 1840) was an English Whig politician who sat in the House of Commons variously between 1800 and 1837.

His maternal first cousins and brothers-in law (through the marriages of his sisters Isabella and Carolina) were Edmund Boyle, 8th Earl of Cork, and Vice-Admiral Sir Courtenay Boyle.

[11][12] He was re-elected in 1837,[13] and held the seat until his resignation later in 1837 by taking the Chiltern Hundreds.

They lived at Midgham House in Berkshire and at Cowdray Park in West Sussex, which came to the Poyntz family after the death of the 8th Viscount Montagu.

The arms of the head of the Poyntz family of Cowdray Park are blazoned Barry of eight gules and or.