No I think its german...
Yes, Peter Falk is Jewish. He did not have a religious upbringing, but his parents were Jews of Eastern European descent.
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.
Geoff Falk's birth name is Geoffrey Alan Falk.
Jennifer Falk's birth name is Jennifer Eden Falk.
Nikki Falk's birth name is Nikki Michelle Falk.
Niklas Falk's birth name is Niklas Daniel Falk.
That is their last name.
Perry Falk's birth name is Perry McCants Castleman Falk.
Falk Harnack's birth name is Falk Erich Walter Harnack.
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.