No problem Casalguidi,
These are the other two marriage's. To me it would seem that Isaac who married in 1819, is the same Isaac below, marrying twice.
Looking at the distribution map for the name Berry on the marriage index, the name appears all over Sussex, West & East, but the biggest number are in FENHURST with 19 marriage's (right on the Hants border) & Brighton with 15. They certainly moved about! If you want anymore help, just let me know.
From the Sussex Marriage Index:
Fernhurst, West Sussex, Date: 25 Jan 1828:
Isaac BERRY, widr
Emma CURTIS, sp wcop botp (B)
Extra Information: Witness wit: Jas Madgwick My Etherington
From the Sussex Marriage Index:
Fletching, East Sussex, Date: 22 Jun 1829:
Isaac BERRY, bach
Naomi CLARK, sp botp (B)
Jane