I am very confused here looking at Trees as some have James born Dundry, Somerset.
His Wife Elizabeth is down as several surnames.
A lot of Tree copying going on.
Some of these have this James Parents as the same you name.
Is this your Elizabeth in 1851 Census?
1851 Census
Dunsford, Devon
(St Thomas Reg District)
William CORNISH, 29, Head, Mar, Ag Lab
Sarah Cornish, 50, Wife (image is 30*)
William Cornish, 4, Son
Anna Maria Cornish, 2, Daug
Elizabeth PONSFORD, 42, Sister, Widow
JOHN Ponsford, 7, Nephew**
John Casley, 51, Lodger
Everyone born Dunsford*
GRO Index Birth Regs
PONSFORD, JOHN, Mothers mn PARR****
GRO Reference: 1844 M Quarter in ST THOMAS UNION Volume 10 Page 225
CORNISH, ANNA MARIA PARR, Mothers mn PARR***
GRO Reference: 1848 S Quarter in ST THOMAS UNION Volume 10 Page 219
Marriage Reg;
March 1846, St Thomas, 10 387
William CORNISH and Sarah PARR on same page.
Baptisms;
St Mary, Dunsford
ELIZABETH Parr 4 Feb 1810*****
JAMES 15 Dec 1811
WILLIAM 17 Oct 1813
ELIZA 22 Oct 1815
SARAH Parr 25 Jan 1818****
MARIA 10 June 1821
JOHN 4 April 1824
SUSANNA ANN 12 Nov 1826
Parents JAMES/MARIA
Sarahs has extra info
Fathers Occp Cordwainer, Abode Brownings Cottage.
On the last 2 the abode is Jervices
ELIZA 1815 likely had an illeg Daug Mary Ann Westlake Parr 1840
All above Baptisms on FreeREG.
Trish