Krakus

Krakus, Krak or Grakch was a legendary Polish prince and founder of Kraków, the ruler of the tribe of Lechitians (Poles). Krakus is also credited with building Wawel Castle. The first recorded mention of Krakus, then spelled Grakch, is in the Chronica seu originale regum et principum Poloniae from 1190. He is also said to have defeated armies of the Roman Empire, which were attacking from the south.