i am aware of the Jeanne variation, the only problem is i am bengali and Jehanne is from french origin. i kinda think my mom didn't think of that one. she took the name because of its arabic origin (she claims that it is arabic). also, my middle name is spelled in the masculin when comparing to Jehanne. :-)
my mom says that Jehan meant "the world" in arabic (not sure about this). can anyone give me any information about this ? it would be greatly appreciated.