Complex sentence: The one scandal attached to her was an allegation that Fordham had a wife still living, who was mad, so the two were not legaly married and Clutterbuck certainly reverted to her maiden name by her death.
Split into simpler sentences: The one scandal attached to her was an allegation that Fordham had a wife still living, who was mad, so the two were not legaly married. Clutterbuck had certainly reverted to her maiden name by her death.