The Normans, led by Robert Guiscard, conquered the entire Gastaldate of Conza between 1076 and 1079 as part of the larger conquest of Southern Italy. The last gastald of Conza, Guido, the uncle of Gisulf II, unsuccessfully opposed the invasion. Under the Normans, Guardia became a fiefdom governed by a feudal lord. Under the lords, the peasants were bound to the fiefdom and were sold along with the land as serfs. There were two types of agrarian pacts between the feudal lords and peasants: