However, archival research done by Muhamet Pirraku confirms Hasan Prishtina's writings, and points that some documents give an alternative name of Abdullah Ali Berisha, Mehmet.
Međutim, arhivska istraživanja Muhameta Piraka potvrđuju pisma Hasana Prištine i ukazuje na to da neki dokumenti pominju ime Abdulah Ali Beriša, Mehmet.