Here's the 1871 entry:
Furnace, Sguborycoed
Elizabeth Richard, unm, 58, works with farmers, b. Llanfihangelgenauglin (as written!)
Sophiah Prisila Richard, daur, 13, b. Aberystwith (do)
William Richard, son, 10, b. Talybont
Lidia Harriet Richard, daur, 8, b. do
PS - could this Elizabeth be the Elizabeth, wife of Thomas Jones, that osprey found on the 1891
Pentrebach, Ysgubor y Coed, Cards RG12/4586 folio 4 pg 1
Thomas Jones head 53 labourer b. Sguborycoed (deaf & dumb)
Elizabeth wife 63 b. Llanfihangel
Elizabeth J Williams granddau 6 b. Merionethshire, Parish of Dolgelley
Age is a 10 years out but census ages are odd!