John was born in year 1565. John's father was John Bullock and his mother was Constance Willcock. His paternal grandparents were John Bullock and <Unknown>; his. He was the second of four children. He had two brothers and a sister, named Thomas, Richard and <Unknown>. He died, at the age of 56 years, in March 1621.
John and Mary were married in a religious ceremony on October 13th, 1594 in Lanhydrock, Cornwall. They had a son and a daughter, named Thomas and Constance.