I knew Margaret had to be around in 1901, and here she is.
1901--18, Foundry Street, Porth, Ystradyfodwg, Pontypridd, Glamorganshire, Wale
John S Jones Head Married 35 Collier timberman b Talgarth, Breconshire
Margaret Jones Wife 40 - b Talysarn, Cardiganshire
William Jones Son - 13 Colliers doorboy b Dowlais, Glamorganshire
Annie M Jones Daughter 6 - b Treforest, Glamorganshire
John S Jones Son 3 - b Treforest, Glamorganshire
William Thomas as per posted gro birth certificate.
JONES, ANNIE mmn PARRY
GRO Reference: 1894 M Quarter in PONTYPRIDD Volume 11A Page 295
JONES, JOHN SAMUEL mmn PARRY
GRO Reference: 1898 J Quarter in PONTYPRIDD Volume 11A Page 586
SS
Full house 1891 census--5, Graig Terrace, Llantwitfardre, Pontypridd, Glamorganshire, Wales
John Jones Head Married 26 Coal miner Breconshire
Margaret Jane Jones Wife 21 - b Cardiganshire
William Thos Jones Son 2 b Porth, Glamorganshire
James Smith Boarder Single 20 Coal miner b Kent