Baby Name Poll

Americus (Yea!) vs. Americus (No way!) vs. Please read!
So I named our girls, Stella, Grace, and Kira with agreement but no real strong feelings on their names from DH. Now, he really wants to name our son, Americus. This would be his official name but he will go by Merrick. I like Merrick but, Americus? Should I just give it the okay or is it really terrible?! I've tried to "sell" him on other names, but he truly likes this one! Please vote to convince me or him!