His grandson Rt. Hon. Sir Peter Maudslay Hordern, D.L., M.A. was Member of Parliament (MP) for Horsham from 1964 to 1997. Other members of his family who were also involved in the First World War were his brothers: Boer War and First World War soldier Brig. General Gwyn Venables Hordern, C.B., CMG, J.P. of Baughurst House, Ramsdell, Hampshire, (also an accomplished cricketer who scored a half century, in 1896, for the KRRC against a Free Foresters Team which included, C.J. Kortright, who Wisden described that year as the fastest bowler in the history of the game), Capt. Lionel Herbert Hordern, R.N., O.B.E., J.P., of Throwley House, Faversham, Kent and Radcliffe Hordern of Warrenton, Virginia, whose son Herbert Radcliffe Hordern, served in the Irish Guards and died of wounds from the First World War. His son Capt. Charles Hubert Hordern M.B.E., and nephew, Brig. Herle Maudslay Hordern, M.C., O.B.E., also fought in the First World War.