Gelblum

Yiddish for yellow (gelb) and flower (blum), i.e. yellow flower .

Heller

From the name of the German town of Schwaebisch Hall. Already encountered in the 16th Century. Yom-Tov Lipmann ben Nathan ha-Levi Heller, (b. Wallerstein, Bavaria - Kraków, August 19, 1654), was a Bohemian rabbi and Talmudist, best-known for writing a commentary on the Mishnah called the Tosafot Yom-Tov (1614-7), one of the major Talmudic scholars in Prague and in Poland during the "Golden Age" before 1648.

Variants: Heler, Geller, Helir, Eller, Heiler, Hiller.
Many bearers lived in Vienna in the 17th Century, most are likely to be Levites.

Glantz

From Glanz, German for Shine.

Gunger

From the German for hunger.

Greenbaum

Yiddish for Green Tree, alt. spellings: Greenboym, Grinbaum, Grinboym

Gutnick

From Ukrainian for a glass factory worker (gutnik). Often found amongst those with roots in Zvenigorodka (Zwienigorodka ) and Radomysl (Poland).

Also Utnik, Gutnikov, Gutnitsky, Kutnik, Gitnik.