On 26 August 1884 Williams-Wynn married his cousin Louise Alexandra Williams-Wynn (1864–1911), daughter of
Sir Watkin Williams-Wynn, 6th Baronet and the sole heiress of the Wynnstay estate. They were divorced in 1898, having had three children: • Gwladys Elin, born 4 September 1885, married Major Walter Kynaston, TD • Sir Watkin Williams-Wynn, 8th Baronet, born 25 January 1891, died 9 May 1949 • Constance Mary, born 20 September 1895, married Major Guy Mostyn–Owen,
12th Lancers He died on 24 May 1944 and was succeeded in the baronetcy by his son. ==Notes==