Haim Katz - Hachoen Wartski From what I have gathered that is the correct ancestry of your great grandfather Hagaon Rabbi Isaac Zajdel, Zt"l(of lask&Ropczyce) Of course, when it comes to Shaul Wahl and Mordchai Yaffe there are various opinions. What I have is based on various sources, including:
1) https://www.geni.com/photo/view?photo_id=6000000218562646838 and
2) "In the year 5363 (1603), served as the Rabbi of Lutsk one of the greatest rabbis of his generation, HaGaon R' Moshe son of R' Yehudah HaCohen Shapira, grandson of the well known Gaon, R' Yitzchak Shapira, president of the court of the holy community of Krakow. HaGaon R' Moshe, the Rabbi of Lutsk, was the son-in-law of R' Shaul Wahl, the Polish "King," who carried the crown of Poland on his head for one night. There are many legends about this matter in the history of the Jews of Poland, and R' Shaul was undoubtedly the leader, and the "lobbyist," of the Jews of Poland and Lita in that generation. From Lutsk, HaGaon R' Moshe moved to serve as the Rabbi of the Krakow region. He wrote the book, Questions and Answers Maharam[3], which remained in a manuscript and was not printed. There is consent from him on the book, Mekor Chachimim [The Source of Sages], which was printed together with the consents of famous Geonim, the Shelah and Ba'al Halevushim[4]. He passed away in the year 5377 (1617)." https://www.jewishgen.org/yizkor/lutsk1/lut295.html