This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Codex Manesse Burggraf von Regensburg. Miniatur der Burggraf von Regensburg Codex Manesse author PDold Original upload log de Ireas CommonsHelper page de CodexManesseBurggrafvonRegensburg Shamrock bytes no Andere Versionen BildPDaltVervielfltigung Burggraf von Regensburg