In 1901 William Wilkins, aged 24, born in Pontypridd Glamorgan, single, black smith, was with his parents at 117 Middle Street Pontypridd.
In 1911 William Wilkins, aged 34, born in Pontypridd Glamorgan, black smith [for] electric tramway, and wife Margaret Ann Wilkins, aged 34, born in Pontypridd (no children), were living at 58 Panty Graig Wen, Pontypridd.
In the 1939 Register William Wilkins (b. 26 Aug 1877*), blacksmith, and wife Margaret A Wilkins (b. 7 Feb 1876), unpaid domestic duties, were at 58 Pantygraigwen Road, Pontypridd Glamorgan. At the same address was Glyndwr Davies (b. 7 May 1919), single, fitter.
* Per the GRO birth index the correct year is 1876.