The name Alwilda means Elf Battle and is of Scandinavian origin. Alwilda is a name that's been used primarily by parents who are considering baby names for girls.

From the Norse name Alfhildr which means "Elf Battle." In Norse mythology, Alfhild was a young girl
who disguised herself as
a warrior in order to avoid marriage to the king, Alf. Based on the
name of a female Scandinavian pirate, Alfhild. Other variations include
Awilda or Elwilda.