Piotr Wysz Radolià Âski of Leszczyc coat of arms was born circa 1354 in Radolin and died on 30 September 1414 in Poznaà Â. He was a bishop of Kraków from 1392, and a bishop of Poznaà  from 1412. A lawyer by profession, he studied in Prague and Padua, where in 1386 he received his doctorate in dual law.
Radolià Âski worked for the King Wà Âadysà Âaw II Jagieà Âà Âo and Queen Jadwiga. From 1391 he served as a chancellor in the court of the queen, and on 4 December 1392 was appointed Bishop of Kraków. He was a signatory to two Polish-Lithuanian acts of union, that of Vilnius and Radom in 1401 and of Horodà Âo in 1413.
He co-founded the Department of Theology of the Jagiellonian University in 1397 per decree of Pope Boniface IX. Radolià Âski was also the first chancellor of the university.