1. I chose my own name! My birth name started to feel childish to me and had other associations I didn't like. I chose Willa for a number of associations but one is in honor of my theater teacher, whose name is Wilma. Though I utterly hate when anyone calls me Wilma. 😁
2. IIRC, I read the tagged book on my 40th birthday, and it put the name “Willa“ into my mind.