Degory Priest's lineage and his activities as a Mayflower passenger were judged to be unreliable. Nevertheless to proceed Priest was born between 1579 and 1582 in London, England. Furthermore his wife, Sarah Allerton was born in 1588 in London, England. She was the sister of Isaac Allerton. Degory Priest and Sarah Allerton were married in 1611. Sarah Allerton married Degory Priest when she was twenty-three years old. At least one of his grandchildren was an early resident of Nantucket Island. Sarah Allerton's brother Isaac Allerton and his family were also passengers on the Mayflower. Degory Priest died in Plymouth in January, 1621, fourteen months after the Mayflower landed in America.