Question: Who is the paternal grandmother of John Lowther, 1St Viscount Lonsdale?
Sentence (from "John Lowther (died 1668)"): Colonel Sir John Lowther (c. 1628 – March 1668) was an English landowner, at Hackthorpe, the eldest son and heir of Sir John Lowther, 1st Baronet and Mary Fletcher.
Relevant evidence: Yes