Mary was born in year 1761 in St Issey, Cornwall and was baptised on May 11th, 1761. Mary's father was John Bullock and her mother was Phillipa Arthur. Her paternal grandparents were John Bullock and <Unknown>; her. She was the third of eight children. She had five brothers and two sisters, named David, John, Richard, Richard, William, Mary and Catherine. She died in year 1765.