Is this names fine?

I'm writing a fanfiction which happen in the 11th century, and just found out my main character names' wasn't fit. Their names are Elazar and Adwin.

I thought their names was really cool and it fitted their personality perfectly, but I just found out:

1. Elazar. Is. A. Boy. Name (I was like "How???" I really see it as a unisex name.)

2. Adwin have origin in India, and the story happen in 11th century.

Name nerds, how do you fell about it? And I won't change their name, so don't give me recommendations pls.

P/S: What do you guys thinks about Amira too?