Question: Who is the paternal grandfather of John Russell, 4Th Duke Of Bedford?
Sentence (from "John Russell, 4th Duke of Bedford"): Known as Lord John Russell, he married in October 1731 Diana Spencer, daughter of Charles Spencer, 3rd Earl of Sunderland; became Duke of Bedford on his brother's death a year later; and having lost his first wife in 1735, married in April 1737 Lady Gertrude Leveson-Gower (died 1794), daughter of John Leveson-Gower, 1st Earl Gower.
Relevant evidence: No