Yes, Peter Falk is Jewish. He did not have a religious upbringing, but his parents were Jews of Eastern European descent.
Jennifer Falk's birth name is Jennifer Eden Falk.
Geoff Falk's birth name is Geoffrey Alan Falk.
Nikki Falk's birth name is Nikki Michelle Falk.
Niklas Falk's birth name is Niklas Daniel Falk.
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.
Falk Harnack's birth name is Falk Erich Walter Harnack.
Perry Falk's birth name is Perry McCants Castleman Falk.
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.