Hi Tony
I had a look at transcripts of Southwold PRs but could not see the baptism of Susan French, sorry.
Only child of Samuel and Susan baptised at Southwold was
Samuel, 25th August 1776
Also the marriage that Suffolk-Sue found for you:
Samuel French (widower) OPT
Susanna Watson (spinster) of Beccles
married by licence
3rd November 1775
Both signed
Witnesses: Elizabeth Everard and J Sheldrake
I think I might have found the previous marriage of Samuel, also at Southwold:
Samuel French (sm) OTP
Elizabeth Mills (sw) OTP
married by banns
25th December 1754
Both signed
Witnesses: William Nunn and John Colman
Elizabeth French buried 10th January 1774
Children of Samuel and Elizabeth French (late Mills)
Susan, bap 13 Feb 1757,
Elizabeth, bap 24 Sep 1758, buried 28 Sep 1758
I could not see any other French baptisms at Southwold, sorry.
Kind regards
Anne