 Conrad made Guaimar a powerful prince, and he extended his authority militarily over the coastal city-states of Gaeta, Naples, and Amalfi.He opened up the Campania, Apulia, and Calabria to conquest, but his successes were reversed by Conrad's son, Henry III, who in 1047 removed Guaimar from Capua and restructured the nature of his suzerain-vassal relationships to limit his power.In 1052, Guaimar was assassinated, and his son and successor, Gisulf II, showed none of his political acumen.