Question: Who is Henry De Burgh, 1St Marquess Of Clanricarde's paternal grandmother?
Sentence (from "Henry de Burgh, 1st Marquess of Clanricarde"): He succeeded his father as Earl of Clanricarde (among other titles) on 21 April 1782, became a Knight of the Order of St Patrick on 5 February 1783 and on 6 March of the same year was invested as a member of the Privy Council of Ireland.
Relevant evidence: No