Jo, In the Genealogy of the Bliss Family there is a rundown on Jonathan on page 44.This states the following: a "Mr. Bliss was married in about 1648 to Miriam Harmon (a sister of the husband of his sister Mary, and possibly the dau. of Francis and Elizabeth Harmon). On page 36 the description of Mary,says she was married to Nathaniel Harmon, of Braintree, Mass. and then refers you to The Harmon Genealogy, by Artemas C. Harmon, Washington, D.C., 1920. Have you seen both of these books?