Question: What is the date of birth of Robert Balfour, 3Rd Earl Of Balfour's father?
Sentence (from "Gerald Balfour, 2nd Earl of Balfour"): G. W. Balfour until 1930, was a senior British Conservative politician who became a peer on the death of his brother, former prime minister Arthur Balfour, in 1930.
Relevant evidence: No