I am trying to understand the situation. Are you saying that there are two men, who you think are brothers, one of whom has the last name Shames and the other Soloveichik? This seems very unusual, although there are situations in which this may be true. I have considered several situations according to the information you already presented, but my thoughts are mostly conjecture, because I think there is very little information presented, and it would help to know all the details available to you, including the specific names, dates, places, events, documents that mentions these data, and the exact quotations made in the available documents that present the information.