Egerton married Margaret Gillian, youngest daughter of
Canon Charles Cuthbert Inge,
Rector of
Streatley, Berkshire, on 10 April 1946. Egerton and his wife had three children: William (born 1949), who succeeded to the baronetcy in 2010, and two daughters, Charlotte (born 1950) and Caroline (born 1955). Egerton succeeded his
second cousin, Sir John Grey-Egerton, 15th Baronet, to the
baronetcy in 2008. ==Arms==