Question: Who is Richard Trench, 4Th Earl Of Clancarty's paternal grandfather?
Sentence (from "Richard Trench, 4th Earl of Clancarty"): On 29 November 1866 he married Lady Adeliza Georgiana Hervey, daughter of Frederick William Hervey, 2nd Marquess of Bristol and Lady Katherine Isabella Manners.
Relevant evidence: No