Dudley Cosby (Baron Sydney), Former MP for Carrick, Commits Suicide

Dudley Alexander Sydney Cosby, 1st Baron Sydney (c. 1730 – 22 January 1774), was an Irish politician and diplomat.

Cosby was the son of Pole Cosby, of Stradbally, Queen’s County, and Mary, daughter of Henry Dodwell. Dudley Cosby was his grandfather.