See the family moved to Ystradyfodwg, (Rhondda)
Marriages from Ystradyfodwg index
DANIEL JENKIN, full age, Bach, father DAVID married EVANS ANN , Spinster, father WILLIAM on 6/12/1875 by banns in YSTRADYFODWG
DANIEL DANIEL, 28, Widower, father, DAVID married SAMUEL MARY age 23 spin, father DAVID on 22/7/1879 by Banns in YSTRADYFODWG
HOWELLS WILLIAM Full age, bach, father THOMAS married DANIEL ELIZABETH Full age, Spin, father DAVID on 1/4/1871 by Banns in YSTRADYFODWG
RICHARDS JOHN age 25, Bach father WILLIAM married DANIEL MARGARET age 23, Spin, father DAVID on 31/5/1884 by Banns in YSTRADYFODWG
EDWARDS JOHN age 22, bach, father GEORGE married DANIEL MARY age 21, Spin father DAVID on 25/12/1890 by Banns in YSTRADYFODWG
These are for Treorchy Cemetery, which are possible burials for where your folk were living in 1891, you can get internment records via email from Treorchy Reference library. check bottom for other burial numbers which will tell you if any others are in plot.
Possibles....David and Gwen are alive 1891 in Blaencwm, Rhondda, cannot locate on 1901
Burial number 9777,Daniel,Gwenllian, died 1892
Burial number 11000, Daniel,David, died 1894
Burial 11571,Daniel,Daniel, died 1895
Have not looked for any others.
Cas