Ellinor's will is entered under 1789 [burial 16 Sep 1789]- my summary - 6 ch thos,john,ralph, 'as also to' cath,elinor + margt creech;some ch ua;husb john
(they married 25 jul 1778 so would expect to find ch from that date)

There is a will for a John Caveen under 1788 [bur 28 Jun 1788] (which I don't have a copy of)
but there is also a marr between a John Caveen and Isabel Christian 16 Feb 1790 which looks rather like a 2nd marr after death of 1st left several young children

where did you get the 1791 bapt from ? - however I only have notes of 3 ch bapt 1782-1786 in Arbory