Looking at Fred's message have found this

1861 Census
Pembrokeshire
District 10
Page 12
Barn Street

John W MAURICE, Lodger age 19 - Student of divinity Baptist College
born Pembrokeshire, Llanfynrnach

1881 Census, 19 Wyndham Row, Ystradyfodwg, Glamorgan

Jane - age 37 - Minister's Wife
Elizabeth S - 9
Jessie - 7
John G - 3
Thomas D - 2 (Thomas Davies MAURICE birth registered September 1878, Pontypridd District)

May be 'Tom' gave an incorrect DOB so he could join up?

children listed as being born Blaenycwm, Glamorgan