From the fourteenth century gold was dug in the hills above the town, and vineyards were planted on the slope below them. Both drew German settlers, who called the place Bösing; German stayed the language of the town for the next six hundred years. The counts of Svätý Jur and Pezinok were by now among the richest families in the kingdom, and in 1401 two of them, George and Nicholas, split the castle and the town between them — a division that took until 1429 to stop being a quarrel. Pezinok won the right to a weekly market before 1376 and to an annual fair in 1466, and without markets a medieval town was not a town at all.Od 14. storočia sa v kopcoch nad mestom dobývalo zlato a na svahu pod nimi pribúdali vinice. Jedno aj druhé lákalo nemeckých osadníkov, ktorí mesto volali Bösing; po nemecky sa tu hovorilo ďalších šesťsto rokov. Grófi zo Svätého Jura a Pezinka vtedy už patrili k najbohatším rodom v Uhorsku a v roku 1401 si dvaja z nich, Juraj a Mikuláš, hrad aj mestečko rozdelili — spory z toho delenia utíchli až v roku 1429. Právo na týždenný trh získal Pezinok pred rokom 1376, na výročný jarmok v roku 1466, a bez trhu by stredoveké mesto nebolo mestom.
