William Dawtrey was born in the early 1550s to William and Margaret (nee Roper) Dawtrey. I have not been able to find a record of his baptism as baptism registers only started sometime in the 1550s, Petworth parish starts in 1559. His mother Margaret was the granddaughter of Sir Thomas More, her father William Roper had married Sir Thomas's favourite daughter Margaret (my dearest Meg).