According to Francis E Blake in his book "Increase Blake of Boston and his descendants with a full account of William Blake of Dorchester and his five children " (1898) John had one wife (Mary Souther) They had one child, Hannah who died age two.
This is substantiated by his will which left all his belongings to his wife, brothers and their children.
Was he married to Hannah Breck? - Francis E Blake makes no mention of her.
His (supposed) son, John, is my (supposed) ancestor.
Can you help?