Nepomucký

Nepomucký is a Czech surname or epithet literally meaning 'from Nepomuk'.

Jan Nepomucký, the native Czech name of John of Nepomuk, a saint
Karel Nepomucký, Czech footballer
, Polish writer

Also, "Jan Nepomucký" could be a compound given name:

Jan S. Kolár, christened Jan Nepomucký Josef Kohn
John Neumann, christened Jan Nepomucký Neumann
Karel VI Schwarzenberg, christened Karel Bedřich Maria Josef Jan Nepomucký Cyril Metoděj
Karel Schwarzenberg, christened Karel Jan Nepomucký Josef Norbert Bedřich Antonín Vratislav Menas