On 20 February 1662, he married Catherine Annesley, daughter of
Francis Annesley, 1st Viscount Valentia and his second wife Jane Stanhope, and had by her three sons and two daughters, including: •
Sir Tristam Beresford, 3rd Baronet (1669–1701), who married Hon. Nichola Sophia Hamilton, youngest daughter of
Hugh Hamilton, 1st Viscount of Glenawly, in 1687. • Catherine Beresford, who married
Matthew Pennefather, MP for
Cashel, son of Matthew Pennefather, in 1697. • Jane Beresford (d. 1716), who married Lt.-Gen.
Frederick Hamilton, son of Archibald Hamilton (himself a son of Robert Hamilton, 7th of Fairholm and of Milburne).
Descendants Through his daughter Catherine, he was a grandfather of Elizabeth Pennefather (–1736/7), who married
Alexander MacDonnell, 5th Earl of Antrim. ==References==