LIPPMANS of Konigsberg

HI - I'm new to GenealogyWise, and this is my first post. My great-grandmother's family came from Konigsberg, East Prussia (now Kalingrad, Russia). Her name was Yetta LIPPMAN, and her father's name was Hirsch LIPPMAN. According to family lore, they were a prominent Jewish family in Konigsberg, but I can't find anything about them on the Internet. If anyone on this list is an expert on Konigsberg, I would love to hear from them. Thanks.

Pat Fuller
Simi Valley, California