YALMETON, (Devon) or YAMPTON, near the r. Yalm, to the S. E. of Plymouth, where Ethelwald, one of the Saxon Kgs, had his chief palace, bel. anciently to the Churchills and Fitz-Herberts; from whom it descended by a daughter to Sir Ralph Montheimer, and by his daughter to John Montacute; and from thence to the Hastings Es. of Huntington.