David Guardi Ker (c. 1778 - 30 December 1844) was an Irish landowner and politician, who represented Athlone in Parliament, 1820–26, and Downpatrick, 1835–41.
[1] A family tradition identified her as a Venetian singer, daughter of the artist Francesco Guardi, whom Ker's father had met and eloped with whilst on the Grand Tour.
[2] His father's brother, Richard Gervas Ker, was MP for Newport in 1802–06.
[1] Ker was keen to enter Parliament at the 1820 general election, but supported his brother-in-law John Waring Maxwell for the candidacy at Downpatrick, where he had been expected to stand.
He stood down at the 1826 general election to make way for Richard Handcock, a nephew of Lord Castlemaine, the patron of the seat.