Thanks for all that. I have managed to trace the family back by searching for Mary rather than William.
There were a lot of children but many had common names. I have found what may be some of them, but there were more than one born with mmn Williams
RG13; Piece: 5153; Folio: 118; Page: 11
1901 Aberyswyth
William Jones retired Mine agent. Aged 75 bc 1826
Where born: Aberystwyth , Cardiganshire
Mary Jones wife 77 b Llanfihangel Y Creuddyn, Cardiganshire,
Jane Davies widow sister in law. 57 Llanfihangel Y Creuddyn,
1891 census for Powell Street (district 4 ) On Anc William is transcribed as 25
RD12 /4458 Civil parish St Michael. Powell Street 103 page 49
William Jones 25 (65) mining agent b Aberystwyth
Mary Jones 67 b Llanfihangel
Thos M son 27 coal miner b Llanbadarn
Richard E Jones 47 visitor b Llanbadarn
Mary J Jones 27 grand daughter b Llanbadarn
In 1881 William is missing and I can’t find him with exactly that birth year.
1881 RG11; Piece: 5449; Folio: 73; Page: 6;
Parcel Canol. Aberystwith
William Jones 55 Mine Agent & Farmer Of 30 Acres
Mary Jones 58 Llanl G Glyn, Cardiganshire,
Sophia Jones 19
Thomas Jones 17
1871 RG10; Piece: 5712; Folio: 81; Page: 22
Llanllyfni Caernarvonshire
William Jones 45 mine agent Aberystwyth,
Mary Jones 47 Llanfihangal Geraurglyn,
Cathrine Jones 22 Llanbadarn fawr 1849
David Jones 20 quarry man b “
John Jones 18 Joiner b “
Richard Jones 13 tailor b “
*William Jones 11 Llanbadarn Vawr
Sophia Jones 9 “ 1862
Thomas Jones 7 “
1861 RG9; Piece: 4200; Folio: 64; Page: 22;
Treferig Cardiganshire
William Jones 35 lead miner Aberystwith,
Mary Jones 37 b Llanfihangel G Glyn,
Anne Jones 14 b Llanbadarn Fawr 1847
David Jones 10 “
John Jones 8 “
Richard Jones 3 “
*William Jones 1 “
1851 HO107; Piece: 2486; Folio: 342; Page: 43;
Treverig
William Jones 24 lead miner
Mary Jones 27 Llanfihangel Genan Glyn,
Anne Jones 4 Llanfihangel 1847
Cathrin Jones 2 “ 1849
David Jones 7 / 1 “
JONES, CATHERINE WILLIAMS 1848 J Quarter in ABERYSTWYTH
JONES, CATHERINE WILLIAMS 1848 S Quarter in ABERYSTWYTH
JONES, DAVID WILLIAMS 1850 M Quarter in ABERYSTWYTH
JONES, RICHARD WILLIAMS 1858 S Quarter in ABERYSTWYTH
JONES, WILLIAM WILLIAMS 1860 J Quarter in ABERYSTWYTH
JONES, WILLIAM WILLIAMS 1860 S Quarter in ABERYSTWITH
JONES, SOPHIA WILLIAMS 1862 M Quarter in ABERYSTWYTH