initial research by Marylou Harris Wilkinson, descendant of JM Jones

FreeBMD Births Jun 1842 BC#WBXZ229148
Jones Jonathan Merthyr Tydfil 26 pg 401
MERTHYR TYDFIL REGISTRATION DISTRICT
Llanfabon GLA 1837-1863 transferred to Pontypridd district on 1.8.1863
Application #COL747344
1842 Birth in the Sub-District of Gellygare in the County of Glamorgan
28th May 1842 Bryn parish of Gellygare
Jonathan, boy
Father John Jones, Collier
Mother Gwenllian Jones formerly Saunders
informant: The Mark of Gwenllian Jones Mother Bryn

1851UKC John M Jones & Family; Wales Census > Glamorgan > Eglwysilan > District 4b; image 1 of 51 @ancestry.com; Source information: HO107/2454; Registration district: Cardiff; Sub-registration district: Caerphilly; ED, institution, or vessel: 4b; Folio: 101; Page: 1; Household schedule number: 1; GSU Number:104195
John Jones b abt 1808 in Merthyr Tyded, Glamorgan, Wales, Head
Gwenllian Jones b abt 1808 in Bedwellty, Monmouthshire, Wales, Wife
John Jones b abt 1833 in Gellggan, Glamorgan, Wales, Son
Edward Jones b abt 1835 in Gellggan, Glamorgan, Wales, Son
Thomas Jones b abt 1837 in Gellggan, Glamorgan, Wales, Son
David Jones b abt 1839 in Gellggan, Glamorgan, Wales, Son
Jonathan Jones b abt 1841in Lanvabon, Glamorgan, Wales, Son
James Jones b abt 1844 in Lanvabon, Glamorgan, Wales, Son
Henry Smith Jones b abt 1844 in Eglwysilan, Glamorgan, Wales, Son
Jacob Jones b abt 1847 in Bedwellty, Monmouthshire, Wales, Son
Margret Jones b abt 1851in Mynyddislwyn, Monmouthshire, Wales, Daughter
Ann Hannan b abt 1839 in Monmouthshire, Wales, Niece

1861UKC John M Jones & Family; Wales Census > Glamorgan > Aberdare > District 36; image 11-12 of 65 @ancestry.com; Source information: RG9/4070; Registration district: Merthyr Tydfil; Sub-registration district: Aberdare; ED, institution, or vessel: 36; Folio: 100; Page: 11; Household schedule number: 57; GSU Number: 543229
John Jones b 1810 in Glamorgan, Wales; Head
Gwenllian Jones b 1811 in Monmouthshire, Wales, Wife
David Jones b 1840 in Glamorgan, Wales, Son
Jonathan Jones b 1843 in Glamorgan, Wales, Son
Henry Jones b 1847 in Glamorgan, Wales, Son
Jacob Jones b 1847 in Glamorgan, Wales, Son
Margaret Jones b 1851in Glamorgan, Wales, Daughter