Cavanaugh is an Irish surname. Not to say there aren't any Jewish people named Cavanaugh, but traditionally it isn't Jewish.
There's no such character named Toby. You're referring to Bruce whose ancestor was named Tobi.Bruce however has not been given a last name.
Character Name: Jordan Cavanaugh
Cavanaugh
Cresta Cavanaugh's birth name is Cresta Ellayna Cavanaugh.
Page Cavanaugh's birth name is Walter Page Cavanaugh.
Casey Cavanaugh's birth name is Lawrence J Cavanaugh Jr..
It is a Croat last name. As most Croats are Catholic, it is not likely a Jewish last name.
probably not, but a Jewish person can have any last name.
That is their last name.
Ziegler is a German and Jewish (Ashkenazi) last name.
It's an English last name. In the past, Jewish people sometimes changed their last name to a non-Jewish name so that they wouldn't be discriminated against or even killed. So a Jewish person could possibly have the last name Chandler.
No, the last name Christakos is of Greek origin. However, it is possible that someone who is Jewish and has Greek ancestry has this last name.