Robert ab Edward ap Humphrey married Elliw, daughter and heiress of Ifan ap Rhys Wynn, Hendre'r Mur, Maentwrog, and by her had two daughters, Elizabeth and Margaret. The former married Robert, son of Archdeacon Edmund Prys, the latter, who was the heiress of Maesyneuadd, married Griffith Lloyd, of Rhiwgoch, Merioneth. She in turn became the mother of another Maesyneuadd heiress, Jane Lloyd.
It is by the marriage of Jane Lloyd to Morris Wynn ap William Wynn (d.1673) of Glyn, Cywarch, Merioneth, that the surname Wynn comes into the Maesyneuadd family and persists for several generations. By his wife, Jane Lloyd, Morris Wynn had a son, Robert Wynn (d.1691), who married Jane Evans of Tan-y-Bwlch, Maentwrog. Their daughter, Lowry, interestingly, became the first wife of Ellis Wynne of Lasynys, renowned as the author of the Welsh prose classic,Gweledigaethau'r Bardd Cwsc. William Wynn (?d.1720), son of Robert and Jane, was the Sheriff of Merioneth in 1714. He married twice, firstly a Margaret, daughter of Ellis Brynkir, the mother of his heir, Robert Wynn; and secondly Margaret, daughter and co-heiress of Roger Lloyd, Rhagad, near Corwen. By his second wife he had another son, William Wynn, Rector of Llangynhafal, Denbighshire, and an eminent poet.... 2