What? It´s the doctor who gives the name to the newborn babies in your culture? Wow. I didn´t know that. Just like I didn´t know that you cannot give your children Christian names. Btw Sarah is a Jewish name ;) It comes in several varieties, depending on the language. The Czech version, for example, of this name is "Sára".
Believe it or not but it was only recently (like 2 years ago) that I watched the Terminator series for the first time in my life :) And it´s even weirder given that Arnie is one of my favorite actors :)