When Josiah Snow was born in 1644, in Marshfield, Plymouth, Massachusetts Bay Colony, British Colonial America, his father, Anthony Snow, was 28 and his mother, Abigail Warren, was 25. He married Rebecca Barker about 1669, in Marshfield, Plymouth, Massachusetts Bay Colony, British Colonial America. They were the parents of at least 1 son and 9 daughters. He died on 1 August 1692, in his hometown, at the age of 48, and was buried in Marshfield, Plymouth, Massachusetts Bay Colony, British Colonial America.