He was born in
Dublin, son of William and Anna Tisdall, who came from
Carrickfergus. Stella, it seems, would marry Swift or no one: whether or not, as she is said to have claimed, they were secretly married in 1716 remains a matter of intense debate, on which no final conclusion is possible. After Stella's death in 1728, the two men were reconciled, and Tisdall witnessed Swift's will. Tisdall died on 8 June 1735. Tisdall in 1706 married Eleanor Morgan, daughter of Hugh Morgan, of the prominent
County Sligo landowning family, whose seat was at Cottlestown, and his wife Penelope Blayney, daughter of
Henry Blayney, 2nd Baron Blayney, and had a son, also called William, who followed his father into the Church.
Philip Tisdall, who was later, as
Attorney General for Ireland, to be a very powerful figure in the Irish administration, was a cousin of William in the next generation. ==Works==