Question: When did John Sackville, 3Rd Duke Of Dorset's father die?
Sentence (from "John Sackville, 3rd Duke of Dorset"): John Frederick Sackville, 3rd Duke of Dorset, KG (24 March 174519 July 1799) was the only son of Lord John Philip Sackville, second son of Lionel Sackville, 1st Duke of Dorset.
Relevant evidence: Yes