The name Wilhelmina is a girl's name of German origin meaning "resolute protection". Wilhelmina and is often added to lists like Badass Princess Names and discussed in our forums with posts like "Quintuplets (mixed)".
From the experts:
Wilhelmina was long burdened with the Old Dutch cleanser image of thick blond braids and clunky wooden clogs, but that started to be changed somewhat by the dynamic Vanessa Williams character on Ugly Betty, and even further by the choice of Wilhelmina by ace baby namers Natalie and Taylor Hanson. For the less adventurous, Willa is, for now, still a more user-friendly female equivalent of William.
Wilhelmina was a lot more commonly heard in the U.S. at one time: it was as high as Number 215 in the 1880s, but has been off the list completely since 1955.
Queen Wilhelmina reigned in the Netherlands for most of the early twentieth century, becoming a heroic figure during the two World Wars. The name got an infusion of glamour via Wilhelmina Cooper, the Dutch-born model who established the top Wilhelmina Model Agency in 1967. Wilhelmina "Willie" Scott was the name of the Kate Capshaw character in Indiana Jones and the Temple of Doom.
To enliven her image, Wilhelmina has a plethora of nicknames: Mina, Minna, Minnie, Billie, and Willa. Wilma.