Case Conversion of US Person Names

Hi, All -- -- - - I occasionally find myself in need of a utility to do case conversion of people's names, especially when I am converting data from an old to a new system. This is the first such occasion in PHP. I know about ucwords() and mb_convert_case(). They do not accommodate names with "middle" capitalization. Does anybody have such a utility to share, or know of one posted by someone "out there" that you have used? I am not looking for perfection -- I know that such is not possible. I just want to pick off the easy ones -- Mc, Mac, O', de, de la, van, vander, van der, d' and others like that. I see some novel attempts to do parts of this on the PHP ucwords() "User Notes" area, but I bet someone out there has something more comprehensive. I'd rather not "roll my own" as I have done in other languages. I have Googled without success. Many thanks, Ken