Johannes Longinus (1415-1480) was a historian (a chronicler
?) and a secretary of Bishop Zbigniew Olesnicki.
He was a canon of Cracow educated at Jagiellonian University in Cracow.
Later he was involved in negotiations with the Teutonic Knights for the Polish king Casimir IV before and during the Thirteen Years' War (1454-66) and at the peace negotiations.
His works :
- Liber beneficiorum ecclesiae Craceviensis ("Book of the Benefices of the Bishopric of Cracow")
- Historiae Polonicae originally appeared in 12 books between 1455 and 1480 but was not published in full until 1711-12 (2 vol.)