Mary, married firstly Lieutenant Colonel John Chichester, son of Edward Chichester, 1st Viscount Chichester. Their son Arthur Chichester, 2nd Earl of Donegall,  inherited the earldom from his uncle.
Mary, married first to Lieutenant Colonel John Chichester, son of Edward Chichester, 1st Viscount Chichester. Their son Arthur Chichester, 2nd Earl of Donegall, inherited the earldom from his cousin.