Hi Keyboard
I located a possible marriage for Harriet on FreeBMD followed by a look-up on the 1881 which looked very probable until I began transcribing; the ages for Elizabeth (9) and Edgar (6) are somewhat older than they should have been. I wonder if you could check the 1891.
Marriages Jun Qtr 1868 Pontypridd
Harriet Davies with Phillip Rees on the same page
1881@ Oddfellows Row, Eglwysilan, Glam [RG11/5293/32/64]
Phillip Rees, HD, 39, Eglwysilan, Glam
Harriet Rees, wife, 38, Caerphilly, Glam
Elizabeth Rees, daug ,9, Caerphilly
Edgar Rees, son, 6, Caerphilly
Thomas Jones, unm, 22, Sculptor, Builth, Brecknock.
Roy