According to Otser HaRabanim # 14771 and # 14957, and the Unbroken Chain 3rd Edition, Volume 1, Chapter 1, page 24, G4.8, Shaul Wahl (King/Day) had a daughter whose name is unknown who married R' Moshe of Lutsk b. Yehuda HaCohen Katz of Cracov. There is a confusion on GENI due to the fact that the son of Shaul Wahl, Meir Moshe (#12826) also had a daughter, whose name is Nislah, who married a R. Moshe Katz-Kahana of Lutsk (#14773).
This is explained in the Lutsk Yizkor Book in an article about the history of the rabbinate in Lutsk written by Rav Elkhanan Sorotzkin (https://www.jewishgen.org/yizkor/lutsk1/lut295.html); the first one is Otser # 14771 and the second one is Otser # 14773::
"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).
11. HaGaon R' Moshe Katz -Kahana, son of HaGaon R' Pesach son of HaGaon R' Tanchum, son of Sherit Yosef [Rabbi Yosef Reyzen] brother-in-law of the Remah[16] -was president of the court in Lutsk after HaGaon R' Yitzchak son of R' Avraham. He previously served as rabbi in the kloiz in Brisk, later as president of the court in Slutsk and from there moved to Lutsk. He was a great and famous rabbi in his generation. He gave his consent, together with Turei Zahav, to the book Amudeha Shivah, in the year 5424 (1664). R' Moshe Katz was the son-in-law of R' Meir Wahl - son of the minister R' Shaul Wahl, and brother-in-law of the famous Gaon, R' Yona Teomim-Frankel, author of the book Kikayon deYona. His sons: HaRav R' Yosef Katz president of the court of the community of Friedeburg, and HaRav R' Yehudah Leib of Lutsk - father of HaGaon R; Moshe Cohen president of the court of the community of Beltz and the country. HaGaon R' Moshe Katz -Kahana passed away in the year 5430 (1670)."
There is some confusion created by this on GENI in that R' Ze'ev Wolf HaKohen, A.B.D. Lomazy and Brest-Litovsk Otser # 5495 is the son of Aryeh Leyb and the grandson of Moshe # 14771, while on GENI is being shown as the son of Yehuda Leyb and grandson of Moshe # 14773.
This makes a difference because Moshe # 14771 is a descendant of the Shapiro HaCohen line and Moshe # 14773 is a descendant of the Shearit Yosef Katz HaCohen line.
