Question: What is the date of death of Maria, Lady Walpole's husband?
Sentence (from "Maria, Lady Walpole"): Maria, Lady Walpole ("née" Skerritt, Skerrett, or Skerret; 1702 – 4 June 1738) was the second wife of British politician and Prime Minister Robert Walpole from before 3 March 1738 until her death in childbirth (miscarriage)
Relevant evidence: Yes