When Robert Symonds was born in 1645, in Wenham, Essex, Massachusetts Bay Colony, British Colonial America, his father, John Symonds, was 51 and his mother, Ruth Fox, was 44. He married Thomasin Walden in 1674, in Wenham, Essex, Massachusetts Bay Colony, British Colonial America. They were the parents of at least 5 sons. He died on 24 August 1724, in Windham Center, Windham, Windham, Connecticut Colony, British Colonial America, at the age of 79.