On 25 January 1703/4, he married Hon. Catherine Smythe, daughter of
Philip Smythe, 2nd Viscount Strangford and, his second wife, the former Mary Porter (a daughter of
Royalist George Porter). Before her death, they were the parents of: Before his death, they were the parents of: • Hon. Anna Maria Roper (1719–1782), who married Capt. Peter Tyler. After his death, his widow married Irish MP,
Robert Moore, a younger son of the
3rd Earl of Drogheda. Through his youngest son from his second marriage, Rev. Richard Henry Roper, he was the great-great-great-grandfather of the historian
Hugh Trevor-Roper, Baron Dacre of Glanton. ==References==