I like Maïeul very much, it was a nice surprise to see one - it's a variant of Mayeul, which is in submitted names. Not mentioned is that he was an early saint, also known as Majolus of Cluny. I can't describe French pronunciations in a sufficiently international way so here's a Forvo link:
http://forvo.com/search/Mayeul/
Mahault is an alternate spelling of
Mahaut. Maïtena & Volodia have been submitted:
http://www.behindthename.com/name/maitena/submittedhttp://www.behindthename.com/name/volodia/submitted