Beside the introduction of the lute to Spain (Andalusia) by the Moors, another important point of transfer of the lute from Arabian to European culture was Sicily, where it was brought either by Byzantine or later by Muslim musicians. There were singer-lutenists at the court in Palermo following the Norman conquest of the island from the Muslims, and the lute is depicted extensively in the ceiling paintings in the Palermo's royal Cappella Palatina, dedicated by the Norman King Roger II of Sicily in 1140. His Hohenstaufen grandson Frederick II, Holy Roman Emperor (1194–1250) continued integrating Muslims into his court, including Moorish musicians. Frederick II made visits to the Lech valley and Bavaria between 1218 and 1237 with a "Moorish Sicilian retinue". By the 14th century, lutes had disseminated throughout Italy and, probably because of the cultural influence of the Hohenstaufen kings and emperor, based in Palermo, the lute had also made significant inroads into the German-speaking lands. By 1500 the valley and Füssen had several lute-making families, and in the next two centuries the area hosted "famous names of 16th and 17th century lutemaking".