Question: Who is Henry De Burgh, 1St Marquess Of Clanricarde's paternal grandmother?
Sentence (from "Henry de Burgh, 1st Marquess of Clanricarde"): He was the son of John Smith de Burgh, 11th Earl of Clanricarde and from 1753 to 1758 was educated at Eton College.
Relevant evidence: Yes