. "0015Z"^^ . "Isak-Beg"@en . . "Sanjak-bey of \u00DCsk\u00FCb" . . . "Ottoman Empire" . . "Ishak Bey"@en . . "Ishak Bey or Isak-Beg was an Ottoman governor and soldier, the sanjakbey of \u00DCsk\u00FCb from 1415 to 1439."@en . "0015Z"^^ . . .