Question: When did Marjorie Sinclair, Baroness Pentland's mother die?
Sentence (from "Marjorie Sinclair, Baroness Pentland"): Marjorie Adeline Gordon Sinclair, Baroness Pentland DBE, DStJ (7 December 1880 – 26 July 1970) was the daughter of Sir John Campbell Hamilton-Gordon, 1st Marquess of Aberdeen and Temair and Ishbel Hamilton-Gordon, Marchioness of Aberdeen and Temair.
Relevant evidence: Yes