Based on the provided source material, there is no information regarding a city named Fontein in Indonesia. The source identifies "Fontein" as a Dutch toponymic surname meaning "fountain," noting that it likely originated from individuals living near a fountain, source, or well. The name has several common spelling variants, including Fonteijn, Fonteyn, Fontijn, and Fontyn. Notable individuals with this surname include various artists, athletes, and scholars, such as the painter Adriaen Fonteyn, chess master George Salto Fontein, and ballerina Margot Fonteyn.