Probably Norman lords from England who were given land there. Robert Guiscard conquered Sicily from the Caliphate and was given the title of Duke by the Pope then created a county for his younger brother Roger Bosso. It united with the Duchy of Apulia and Calabria when it's Duke William died and Roger II inherited it forming the Kingdom of Sicily in 1130. The Counts were Roger, Simon, and Roger II of the house of Hauteville. In 1194, the House of Hauteville lost the kingdom to the House of Hohenstauffen ending the Norman names. Norman monarchs were: Roger, William, Tancred and Constance.