Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

awesome! thank you.
I have just one quick question, If you don't mind. Where could i find info about which Rody Mastalerz belongs to or if it even belongs to one?

Genealogy / THE MEANING AND RESEARCH OF MY POLISH LAST NAME, SURNAME? [4500]

Hello
I've been trying to find out information on my last name but its pretty much impossible. My last name is Mastalerz
Thanks in advance