Some more additions and corrections-
Helen Atkinson (-1897) m.(1872) Dr. Thomas Popham (c1848-1910)- another son:
Lt.-Col. Robert Lionel Popham (1874 Sligo-1957) m.(1932 Kensington, London) Violet May Coldham (d.1957)
1957 POPHAM Robert Lionel of 7 Harrington-court Harrington-road London S.W.7 died 7 April 1957 at Centre Oak Yateley Blackwater Hampshire Administratuion London 19 June to Cyril Popham retired colonel H.M. army. Effects £7149 14s 5.
1957 POPHAM Violet May of 7 Harrington-court Harrington-road London S.W.7 (wife of Robert Lionel Popham) died 28 March 1957 at 99 Cromwell-road London S.W.7 Administration London 18 July to Cyril Popham retired colonel H.M. army. Effects £96 15s 8d.
More on this son-
Harry Temple Popham (1875-1948 Worthing, Sussex, England) m.(1929) Jennie Evelyn Napier-Ford (1885?-1967?)
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1876/03062/2122413 1917 departed London, Eng. for Bombay, India- accountant, Ceylon.
Marriage:
https://familysearch.org/ark:/61903/1:1:QV8M-PH4SDeath:
https://familysearch.org/ark:/61903/1:1:QVC4-1KNJ1948 POPHAM Harry Temple, of 8 Marlow-road Broadwater Worthing died 3 February 1948 Probate Lewes 19 April to Jennie Evelyn Popham widow. Effects £8316 13s 8d.
Their only daughter-
Alice Stewart Popham (1885) m.(1911) John Ashton Sheppard (1876)
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1885/02652/1977731.pdfmarriage:
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1911/09970/5625078.pdf Armorial families : a directory of gentlemen of coat-armour (Volume 2): John Ashton Sheppard, Gentleman, b. 1876; m. 1st, 1905, Patience (d. 1908), d. of Rev. George Benjamin Sweetman of Aghadown Rectory, co. Cork; 2nd, 1911, Alice Stewart, only d. of Thomas Popham, M.D., of Crosshaven. Postal address— c/o T. R. Popham, Hill House, Crosshaven, co. Cork.
? 1983 SHEPPARD Alice Stewart otherwise Alice Stuart of Main Street Schull County Cork Republic of Ireland died 10 Dec 1982 Probate London 3 August £1141.
Youngest son-
Col. Cyril Popham (1890-1958 England) m. Gladys Margaret (1891/1892-1973 Dartford, Kent)-
1 son possibly alivehttps://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1890/02413/1899484.pdf1928 arrived Southampton from Malta: Cyril Popham 37 British Army, Gladys Popham 35, [son] 2. U.K. address- Cork.
1957 arrived Southampton from Singapore- Cyril Popham, 13/8/90, Colonel Army; Gladys M. Popham, 25/7/91.
1958 POPHAM Cyril O.B.E. of Centre Oak Blackwater Hampshire died 9 October 1958 at Royal Hampshire Hospital Reading Probate London 28 December to Gladys Margaret Popham widow, Effects £11228 14s 8d.