My fourth-great-grandfather was Movsha Shames, and Lithuanian records indicate that his brother was Meyer Soloveitchik - part of the rabbinic dynasty. One of Meyer’s brothers was Moshe Soloveitchik, the rabbi of Kovno in the late 1700s. My understanding is that “Movsha” and “Moshe” are essentially the same name. Could Movsha Shames and Moshe Soloveitchik been brothers, given the normal Ashkenazi tradition of not giving brothers the same given name?