Conversation so far:
What was Charles Taze Russell accused of doing?
He was accused of immoral conduct including mental cruelty, referring to forced celibacy and frequent cold, indifferent treatment.
Who did Charles Taze Russell subject to cruelty?
It was alleged that he subjected his wife Maria Frances Ackley to cruelty.

Question: who made these allegations?
Self-contained rewrite: Who made the immoral conduct allegations against Charles Taze Russell?