Question: What is the date of death of Henry Fitzgerald-De Ros, 21St Baron De Ros's father?
Sentence (from "Lord Henry FitzGerald"): Lord Henry FitzGerald PC (Ire) (30 July 1761 – 9 July 1829) was the fourth son of the 1st Duke of Leinster and the Duchess of Leinster (née Lady Emily Lennox).
Relevant evidence: Yes