Can't see a Jane Walters in Moretonhampstead, in fact searching their PR's only throws up 1 Walters Baptism there & that was early 1700's.
However there's this one about 7mls. up the road:
Jane Walter
ch:12 January 1812 THROWLEIGH,DEVON
father: Phillip Walter
mother: Jane
These are all of them;
Thomasin Walter
ch: 8 April 1798
Elizabeth Walter
ch: 18 April 1802
Philip Walter
ch: 25 March 1804
Thomas Walter
ch: 12 October 1806
Joseph Walter
ch: 22 October 1809
Jane Walter
ch: 12 January 1812
Keziah Walter
ch: 15 May 1814
Ann Walter
ch: 2 January 1820
Marr:
Phillip Walter = Jane Dunning
12 Oct. 1795 Throwleigh Devon