Why did Rabbi Yishmael from the Mishna have such a name? Yishmael is obviously the ancestor of the muslims (Bnei Yishamel) The reason Hagar called her son this is because G-D "heard" her prayer and the name itself has a nice meaning, although the Torah itself calls him a Pera Adam. But I still dont understand why any Jew would use this name.
Also are there any Jews called Yishmael from later periods?