per Robert John Parsons’ handwritten notes
could it be a handwriting error, actually 1851 not 1857???
b Nantyglo (“Nantiglove”)

1861UKC Robert Jones & Family; Wales; Glamorgan > Aberdare > District 9; image 3 of 47 @ancestry.com
Civil Parish or Township: Aberdare; Town: Aberdare; County/Island: Glamorgan; Country: Wales
Source information: RG9/4064; Registration district: Merthyr Tydfil; Sub-registration district: Aberdare; ED, institution, or vessel: 9; Folio: 48; Page: 3; Household schedule number: 8; GSU Number: 543228
Robert Jones b abt 1813 in Abergavenny, Monmouthshire, Head
Elizabeth Jones b abt 1818 in Cumcarven, Monmouthshire, Wife
Robert Jones b abt 1851 in Llanelly, Breconshire, Son
Jane Jones b abt 1853 in Aberdare, Glamorgan, Daughter
John Jones b abt 1855 in Aberdare, Glamorgan, Son
Thomas Jones b abt 1858 in Aberdare, Glamorgan, Son
Abraham Jones b abt 1860 in Aberdare, Glamorgan, Son

1871 Wales Census > Glamorgan > Aberdare > District 34; image 44 of 50 @ancestry.com
Civil Parish or Township: Aberdare; Town: Aberdare; County/Island: Glamorgan; Country: Wales; Source information: RG10/5410; Registration district: Merthyr Tydfil; Sub-registration district: Aberdare; ED, institution, or vessel: 34; Folio: 42; Page: 44; Household schedule number: 200; GSU Number: 848036
Robert Jones b abt 1811 in Monmouth, Monmouthshire, Head
Eliza Jones b abt 1818 in Monmouth, Monmouthshire, Wife
Robert Jones b abt 1851 in Brecon, Breconshire, Son; engine driver colliery
John Jones b abt 1855 in Aberdare, Glamorgan, Son
Thomas Jones b abt 1858 in Aberdare, Glamorgan, Son

per Robert John Parsons’ handwritten notes
“Aunt Lizza’s father” is Meredith Evans b 1826 Phlanhedlious d 21 feb 1889
her grandfather Evan Evans, 2 wives & 27 children
Elizabeth Evans her mother (of 13) b 1821 Dowlas Glamorganshire d 18 nov 1901
William Price (father to Eliz Evans) b Newtown Glamorgan
POSS FreeBMD Marriages; Merthyr Tydfil 1871-1881; Robert Jones & Eliz Evans
Marriages Sep 1872 (>99%)
EVANS Elizabeth Merthyr T. 11a 548
Jones Robert Merthyr T. 11a 548