Goštautai (Lithuanian plural form), masculine Goštautas and feminine form Goštautaitė (In Polish - Gastoldowie, later transformed into Gasztołdowie), Gochtovtt, were a Lithuanian family, one of the most influential magnate families during the 15th and early 16th centuries. Their only serious rivals were the Kęsgailos, and from the end of the 15th century the fast rising in power and influence Radvila family clan. It appears from the Latin original spelling of their name Gastoldus which is a variation of castaldius that they had been close to the Grand Dukes and that their function was to oversee ducal demesne. Most power family gained during the reign of Casimir Jagiellon. The castaldius of Vytautas, might have been a voivode of Vilnius and Kreva, and father of Jonas, appears to have been