Willa
[ˈwɪlə]Meaning
feminine form of William
Background Story
Willa is the feminine form of William. It is used in Czech, Dutch, Finnish, French, German, Lithuanian, Medieval English, Scottish, Spanish and Swedish, and its roots are Germanic, Old High German, German and Old English. Wiktionary records that the English name derives from Wilhelmina and was recoined in the 19th century in America from the male given names Will and William.
Variations
Wilhelmina, Willy

Related Names
Wila
Ameli
Armenian form of Amélie.
Gerti
Diminutive of Gertrud
Hanka
A Finnish name from farm place names, and a Polish clipping of Hanna
Nitzi
Sandi
Diminutive of Aleksandar or Aleksander
Saska
Recorded as a masculine given name in Finnish
Ursel
German diminutive of Ursula.
Wanni
Recorded as a feminine given name in Thai