FreeREG has Lewes Bapts in the right time frame but no Charles.
I see that Charles/Mary name Daughters Lucy and Rhoda.
For future ref (after you have the M/C of Charles/Mary)
A HENRY/LUCY bapt a Rhoda 19 May 1833 Lewes,, Henry a Bargeman
+ a Lucy 16 Jun 1822
Henry likely married Lucy BAKER 09 Aug 1818 Lewes
Maybe just a coincidence of names
All on FreeREG
F/S has several more children to them but no Charles.