It cannot be that Gaon Leibush b1455 is the ggs of Yosef HaLevy b1425 (Rabbi Yosef Halevi, [of Poland's wisest]). Suggest that Gaon Leibush gf Yerucham (Rabbi Yerucham haLevi Steinberger, [of Ashkenaz wisest]) be merged with older Yerucham (Gaon Yerucham HaLevi, [of Ashkenaz wisest]) so that now Gaon Leibush appears in the correct chronological location.