Hello Averil,
Frances wrote that the no.18 Ew Corkill Ann Cashin contract is dated 5 Sept 1701, so if the numbering is in date order no.51 may be too late? No.82 was 1719.
But an interesting thought! He might not have been married long to no.2 (Margory) before he died. Certainly worth a look.
The no.18 Ew Corkill Ann Cashen contract 5 Sept 1701 looks like the right one for Edward - he & Ann Cattin married in Maughold 26 Oct 1701.
Sue