Which preposition to use with monomaniac

on Occurrences 2%

Belle, if you keep on at this rate you will be a monomaniac on the temperance question.

about Occurrences 1%

He showed this by giving his impression of another person of the same general mode of life,that A.B. was "a monomaniac about everything."

in Occurrences 1%

It was not strange that she had great success; for she started, a monomaniac in philanthropy, from the summit of personal independence.

Which preposition to use with  monomaniac