I don't think we need any special policy for personal titles like: * Mr. * President-for-life * The Honorable * Blessed * His Holiness * Father
If anyone objects to a *particular* use of a title, they can add an NPOV qualifier, like:
* Sun Myung Moon - called "Father Moon" by friends of the movement * Pope John Paul - called "His Holiness" by Catholics * George Bush - called "Dumbo" by critics - he, he, just kidding * Isaac Newton - known as "Sir Issac Newton" during his lifetime * Mary - known by Catholics and most Protestants as the Blessed Virgin Mary
Etc.
Ed Poor -- known as "Uncle Ed" by one or two Wikipedians of note