He is in charge of ecclesiastical tolls (6)
I believe the answer is:
sexton
This clue might be a double definition.
'he' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'charge of ecclesiastical tolls' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'is in' acts as a link.
Can you help me to learn more?
(Other definitions for sexton that I've seen before include "Church official" , "church assistant" , "Church employee" , "Person who looks after church and churchyard" , "Church bell ringer and gravedigger" .)