Alternate names/spellings: Johannes Longinus or Dlugossius
Dates: 1415 - 1480 ()
A Polish canon, chronicler and sometime diplomat. He served as secretary to Bishop Zbigniew OleÅ›nicki of KrakÃ³w, but was also frequently included in delegations to various negotiations on behalf of the Polish Crown. Shortly prior to his death, he was made Archbishop of Lvov.