🙂 it is not an historical Chassidus, just another name that another Nadvorna or Kretschif descendant gave himself. They have a minhag that all of their descendants should become Rebbes and one is even called the Mosholu Rebbe for…Mosholu Parkway in the Bronx. It is also where Clevelander and Pittsburgher Chassidus come from.
So long as he is not a Creedmoorer einikel…………. (although the Creedmoorer is a direct descendant of Koirach through Avirom and before that from both Er and Onan so his yichis is the best of all of them).