Zissl Königsberg, most likely Petr Weber's grandmother

This is most likely a photograph of my grandmother Zissl Königsberg, mother of my mother, Lola Preiss, née Königsberg. I unfortunately have no clue where and how this photo came to be. According to information that I have at my disposal, apparently the brother of this Zissl Königsberg was Jehuda Shlomo Kellman. So her maiden name would then have been Kellman. From the same source of information, my mother's grandmother was named Chana Kellman, née Weiser. She apparently died in 1929.