Grafschaft Glatz
John of Pernstein (also known as "John of Helfenstein and Pernstein" or "John the Rich"; or or ; or ; born: 14 November 1487 in Moravský Krumlov; died: 8 September 1548 in Židlochovice) was High Treasurer of Moravia from 1506 and 1516 and Landeshauptmann of Moravia from 1515 to 1519 and from 1526 to 1528 and Governor of Moravia from 1530 to 1532. From 1537 to 1548, he was Count of Kladsko and pledge lord of the County of Kladsko.