On the 1851 census the George Nelson born circa 1779 and living in Sheriff Hutton gives his birthplace as the adjacent parish of Terrington not Sheriff Hutton.
HO107 2369 folio 797
Sheriff Hutton Yorkshire
George Nelson 72 Terrington, Yorkshire, Head Married Pauper
There are two other Nelsons in Sheriff Hutton on the 1851 census born Terrington or what looks like Terrington for Christopher.
Christopher a lodger aged 35 ag lab and newly married with a young child
and
John aged 39 a rat catcher married with three young children.
These are the only Nelsons on the 1851 census who give a birthplace of Terrington.
Terrington parish registers are on the IGI between 1600-1863.
GEORGE NELSON
Christening: 20 SEP 1807 Terrington, Yorkshire
Father: GEORGE NELSON
HANNAH NELSON
Christening: 20 MAR 1814 Terrington, Yorkshire (mother Ann)
JAMES NELSON
Christening: 02 NOV 1818 Terrington, Yorkshire
National burial index buried same year (mother Ann)
NANNY NELSON
Christening: 03 NOV 1819 Terrington, Yorkshire (mother Nanny)
JAMES NELSON
Christening: 31 MAY 1822 Terrington, Yorkshire (mother Nanny)
National burial index buried same year Terrington
ROBERT NELSON
Christening: 24 NOV 1823 Terrington, Yorkshire (mother Nanny)
BETSEY NELSON
Christening: 22 JUL 1827 Terrington, Yorkshire (mother Ann)
plus the marriage I'm sure you have spotted in Sheriff Huttton
GEORGE NELSON
Spouse: ANN THORNBOURN
Marriage: 22 NOV 1804 Sheriff Hutton, Yorkshire
The other Nelson Terrington baptisms are
WILLIAM NELSON
Christening: 08 OCT 1809 Terrington, Yorkshire
Father: JOHN NELSON
JOHN NELSON
Christening: 12 JAN 1812 Terrington, Yorkshire
Father: JOHN NELSON
HANNAH NELSON
Christening: 03 APR 1837 Terrington, Yorkshire
Parents:
Father: JOHN NELSON
Mother: MARY
The National burial index covers Sheriff Hutton and Terrington between 1813-1837. Only the two James Nelson burials are in either parish for that period.
Coverage on the IGI for Sheriff Hutton parish registers is 1813-1856. Nelson baptisms in this period don't seem to start until 1828. These are the first two.
HENRY NELSON
Christening: 22 FEB 1828 Sheriff Hutton, Yorkshire
Father: GEORGE NELSON
Mother: MARY
HANNAH NELSON
Christening: 20 AUG 1830 Sheriff Hutton, Yorkshire
Father: GEORGE NELSON
Mother: ANN
The 1861 census shows George who previously gave his birthplace as Terrington still alive.
RG9 3628 folio 98
Sheriff Hutton Yorkshire
George Nelsen 82 Ripon, Yorkshire, Head Widower Ag lab
Cristopher Nelsen 46 Terington, Yorkshire, Son Widower Ag lab
Also in Sheriff Hutton is John aged 44 born Terrington with his wife and family and Robert aged 37 born Terrington with his wife and family.
On the 1871 census the only Nelsons born Terrington are Christopher and Robert, Christopher having remarried and moved away from Sheriff Hutton.
I suggest you request an 1841 census look up for Sheriff Hutton to see who George Nelson senior was living with on that census.
Regards
Valda