Question: Who is Digby Willoughby, 9Th Baron Middleton's paternal grandmother?
Sentence (from "Thomas Willoughby, 4th Baron Middleton"): Thomas Willoughby, 4th Baron Middleton( 19 December 1728 – 2 November 1781), was a British politician who sat in the House of Commons from 1762 to 1774, when he succeeded to the peerage as Baron Middleton.
Relevant evidence: No