He was s of Lt-Col Robert Breynton Yarnton MILLS OBE MC 1900-74 by his 21 Feb 1928 m (Holy Trinity, Brompton) to Esther Greenaway 1908-99 d of Lt-Col Reginald HURST DSO OBE 1867-1948 by his 7 Feb 1907 m Esther Winifred Mary OLDRIDGE DE LA HEY 1881-1959. He m 1962 Hon Susan GLYN b 1940 d of 6th Baron WOLVERTON 1913-88 and Audrey Margaret STUBBS 1914-2007, and had two daus.