Question: Who is Henry St John, 13Th Baron St John Of Bletso's paternal grandfather?
Sentence (from "Henry St John, 13th Baron St John of Bletso"): St John was born at Woodford, Northamptonshire, the eldest son of John St John, 12th Baron St John of Bletso, and his wife Susanna Simond, daughter of Peter Simond, merchant of London.
Relevant evidence: Yes