His great, great-grandfather Sir William Sarsfield served as Mayor of Dublin and purchased an estate at Lucan Manor.
Sarsfield married Mary Crofts, the daughter of Lucy Walter, a Welsh woman who had a youthful relationship with Charles II when he was living at the Hague.
Charles was unmarried at the time, and claims were often made that a marriage ceremony had taken place, which led him to treat Lucy's children with particular care.
Mary was the younger sister of James Scott, Duke of Monmouth, who also looked out for her after their mother died,[1] but was more likely to have been a daughter of Theobald Taaffe.
As a result, following the death of Queen Elizabeth II on 8 September 2022, Sarsfield is a direct ancestor of the first seven members in the apparent line of succession to the British throne, starting with his eight times great grandson Prince William of Wales.