Question: Who is Richard Trench, 4Th Earl Of Clancarty's paternal grandfather?
Sentence (from "Richard Trench, 4th Earl of Clancarty"): Richard Somerset Le Poer Trench, 4th Earl of Clancarty, 3rd Marquess of Heusden (13 January 1834 – 29 May 1891), styled Viscount Dunlo between 1837 and 1872, was an Irish peer, as well a nobleman in the Dutch nobility.
Relevant evidence: No