Is Yehudah Leib Hamburger-Chalfan the same as Löb Chalfan who was murdered in Buda in 1681?
Löb ben Heschel Chalfan
Rabbi Yehudah Leib Hamburger- Chalfan (Hamburger)
See the length article on Löb Chalfan, https://s3.amazonaws.com/photos.geni.com/p13/83/b2/f8/db/534448565ee56a11/lebl_hoeschl_original.pdf