56 clues deciphered, 3 left to go and my brain's scrambled...
a) Charlotte ----- [19th Century novelist], (5): I've got Y-N-E.
b) Persons connected with others. (10): I've got --S-C-A-E-.
c) It conceals a possible winner. (11): I've got-C---C-C---. The 1st letter of (b) would give the 4th of this answer.
Any ideas?