It's great to meet another Yetzer! Thank you very much for contacting me.
I have come to the conclusion that our name is probably not Jewish. It's current translation (spelled with a "y") is of Jewish origin, but originally our name was "Jetzer," and that is of an Austrian origin with an unknown meaning.
Where did your Yetzers settle in the U.S.? Mine settled near Shelby, Ohio in 1832.