Thomas Attree judging by his record of life-long civic service to Brighton.
Both statues have, of course, long since disappeared in common with others in Brighton. I feel a new theme coming on . . .
The NEB, in its article on the Attree Villa, seems to have confused the Garden Temple with the Royal (German) Spa at the south end of Queen's Park. On the other hand Timothy Carder in the original version had it right.
*The New Encylopaedia of Brighton.