castan
Castan is a proper noun that can refer to several distinct uses in different languages and regions. It is most commonly encountered as a surname and as a place name in Spanish-speaking contexts. The form Castán, with an acute accent, is a common variant in Spanish, reflecting stress patterns typical of the language.
As a surname, Castán (often written Castán in Spain) appears among Spanish- and Portuguese-speaking populations. Root
As a toponym, Castan or Castán can occur as the name of villages, districts, or geographical features
In other contexts, Castan may appear as a personal or organizational name, or as a character name