Question: Sir William Arthur Mount, 1st Baronet is the great-grandfather of which former British PM?
Sentence (from "Sir William Mount, 1st Baronet"): Sir William Arthur Mount, 1st Baronet CBE (Hartley, Hampshire, 3 August 1866 – 8 December 1930) was a British Conservative Party politician and Member of Parliament for the Newbury constituency.
Relevant evidence: No