Question: What is the date of death of Peter Haden-Guest, 4Th Baron Haden-Guest's father?
Sentence (from "Leslie Haden-Guest, 1st Baron Haden-Guest"): Leslie Haden Guest, 1st Baron Haden-Guest, (10 March 1877 – 20 August 1960) was a British author, journalist, doctor and Labour Party politician.
Relevant evidence: Yes