Have you seen Dr. Dan Hirshberg's website? https://www.ics.uci.edu/~dan/genealogy/
Dan has recreated most of the Jewish citizenry of Krakow. I do not know if this data is also in JewishGen, but if it is, I don't think it includes Dan's search engine. One of the features of his free and searchable database is the family trees of hundreds of Jewish surnames in Krakow. I checked yours. It is there, in the "Early Family Trees" tab, under the name "Jolas", last updated January 15, 2021. That tree starts with patriarch Izaak Jolas, 1769-1846.
Good Luck and Happy Hunting.
Ken Domeshek - Houston
(Damesek, Kartorzynski, Braverman, Sinienski, Simonovitz)