[ Baby Names ] Open Question : Any idea what to do about the baby name?

We are from armenia and we moved to america. my mom is about to have a baby BOY. We want to name him Karen, it is a (manly) boy name in armenian, but very common GIRL name in english. she wants to name him that because of her brother, who was for some reason killed in russia. It is what we want, but we are afraid, if he grows in America he will be mistaken for a girl or made fun of. Do not say do it anyway. Anybody know something close to this name for boys? Or maybe another name in armenian that is also in english? it can't be eduard. someone in my family is named that in this generation.