William Jadwyn Esq. of Berwick (New England Historical & Genealogical Register, vol. 46, 1892, pg. 311).
William JADWYN, born ca 1526 at Berwick, England (HJ 18). William Jadwyn, Esq., was a landowner and lived in Berwick, England, which is in the ware district of Hertford, about 20 miles north of London. The word "berwick" means "cornfield." The William Jadwin family lived in Cheshire in western England around 1560. (http://home.sjfc.edu/~jadwin/jadfam.htm web site).