Okay, shotgun approach -- let me just rattle off a few potentially useful words.
Esquire (traditionally male, but now used so seldom that I don't think that matters)
Honorable (a gender-neutral title used in England for the son or daughter of a baron or viscount)
Don (in English, at least, was once exclusively for male scholars but now isn't so rigidly used)
Fellow (again, once exclusively male but now more gender-neutral, as in Fellow of the College of Surgeons, etc.)