Question: Who is the paternal grandmother of Philip Bertie?
Sentence (from "Robert Bertie, 3rd Earl of Lindsey"): Robert Bertie, 3rd Earl of Lindsey PC FRS (8 November 1630 – 8 May 1701), styled Lord Willoughby de Eresby from 1642 to 1666, was an English nobleman.
Relevant evidence: No