1660 Ichabod Sheffield married Mary Parker, daughter of George Parker [1] [2]
[1] G. Andrews Moriarty, "One Branch of the Rhode Island Sheffields," New England Historical and Genealogical Register 104 (1950), 3-14, at 3, [AmericanAncestors].
[2] James Savage, John Farmer, Orrando Perry, A Genealogical Dictionary of the First Settlers of New England, Showing three generations, Vol. 3 (Boston: Little Brown & Co, 1861), 350, [GoogleBooks], [HathiTrust], [InternetArchive].