It's usually short for Gregory, and most uses of Gregory trace back to Pope Gregory I, so you can't call it a Jewish name. However, many, perhaps most Jews are given Hebrew names. Some Hebrew names are easy, David, Adam, Jonathan, but others seem awkward, things like Gershom or Gomer. In some families, kids who are given such names are also given nearly random English names that start with the same first letter. So, you'll find some Jews named Greg.
He is short, dark haired, and funny. And his last name is German-Jewish. He can insist he's not Jewish, but from what I've just stated, at the very least, his father was Jewish.
Gregg Popovich is known to be a lapsed Catholic but does not publicly identify with any specific religion. He is more focused on social justice and humanistic values.
Greg Noll's birth name is Greg Lawhead.
Greg Karas's birth name is Greg Teramoto.
His Brothers Name Is Greg Horan.
Greg Kean's birth name is Greg Kean Williams.
Greg Rikaart's birth name is Greg Andrew Rikaart.
Greg Patmore's birth name is Greg Miles Patmore.
Greg Hodes's birth name is Greg Alan Hodes.
Greg Mathew's birth name is Greg Logan Matthews.
Greg stated that he was Jewish in a press conference in the summer of 2009 for the new show Shalom Sesame on Jew Watch, a hit Jewish channel. He also said he was excited to go back to his roots. Greg was thought to be Jewish when in July 2009 Jew Watch had announced that a new 12-part Shalom Sesame series will be produced, with stars including Jake Gyleenhall, Christina Applegate, Debra Messing, Anneliese van der Pol, Adam Sandler as well as Greg Kinnear. The timing of the release is expected to be coincident with Hanukkak in December 2010.Yes, Greg Kinnear is Jewish
Greg stated that he was Jewish in a press conference in the summer of 2009 for the new show Shalom Sesame on Jew Watch, a hit Jewish channel. He also said he was excited to go back to his roots. Greg was thought to be Jewish when in July 2009 Jew Watch had announced that a new 12-part Shalom Sesame series will be produced, with stars including Jake Gyleenhall, Christina Applegate, Debra Messing, Anneliese van der Pol, Adam Sandler as well as Greg Kinnear. The timing of the release is expected to be coincident with Hanukkak in December 2010.Yes, Greg Kinnear is Jewish