The male versions: Will, Wilhelm, or William.
Noteworthy: Queen Wilhelmina of the Netherlands, Wilhelmina Modeling agency
Nicknames: Willa, Willie, Mina, Wilma, Minnie
Pronounced willamina, the "h" is silent
Wilhelmina is a name perfect for an intelligent, beautiful, and sweet female with a gental and funloving demeanor. Sophisticated and determined.