Question: Who is Digby Willoughby, 9Th Baron Middleton's paternal grandmother?
Sentence (from "Digby Willoughby, 9th Baron Middleton"): Digby Wentworth Bayard Willoughby, 9th Baron Middleton (24 August 1844 – 28 May 1922), was an English nobleman, the eldest son of Henry Willoughby, 8th Baron Middleton.
Relevant evidence: Yes