Ancestry and FamilySearch produce these baptisms, all at Saul,

William 01/07/1898, Moses and Abigal, daughter of Jonathan and Elizabeth Newton
Elizabeth 22/03/1801, Moses and Abigal
Mary Anne 13/03/1803, Moses and Abitha
Sarah 20/10/1805, Moses and Abigail
Hannah 27/03/1808, Moses and Abigail

Since Mary Anne neatly fits the pattern I think Abitha must be Abigail although the BT certainly reads Abitha.