left their mark especially on the Visigothic Cemetery of Alcoitão, as well as in the late-Roman and medieval necropolis of Talaíde. Similarly, Muslim settlers in the region left their mark on local place names, including "Alcoitão" and "Alcabideche", where the romantic poet Ibn Muqana al-Qabdaqi, who wrote of the region's agriculture and windmills, was born at the beginning of the 11th century. The discovery of several corpses in 1987 at Arneiro, in Carcavelos, led to the identification of fifteen burials that, due to their characteristics, made it possible to verify that the individuals buried there were of Berber origin. The development of Cascais began in earnest in the 12th century, when it was administratively subordinate to the town of Sintra, located to the north. In its humble beginnings, Cascais depended on the products of the sea and land, but by the 13th century its fish production was also supplying the nearby city of Lisbon. The toponym "Cascais" appears to derive from this period, a plural derivation of cascal (monte de cascas) which signified a "mountain of shells", referring to the abundant volume of marine mollusks harvested from the coastal waters. During the 14th century, the population spread outside the walls of its fortress castle. The settlement's prosperity led to its administrative independence from Sintra in 1364. On 7 June 1364, the people of Cascais obtained from King Peter I the elevation of the village to the status of town, necessitating the appointment of local judges and administrators. The townspeople were consequently obligated to pay the Crown 200 pounds of gold annually, as well as bearing the expense of paying the local administrators' salaries. Owing to the regions' wealth, these obligations were easily satisfied. The town and the surrounding lands were owned by a succession of feudal lords, the most famous of whom was João das Regras (died 1404), a lawyer and professor of the University of Lisbon who was involved in the ascension of King John I to power as the first King of the House of Aviz. The castle of Cascais was likely constructed during this period, since by 1370, King Ferdinand had donated the castle and Cascais to Gomes Lourenço de Avelar to hold as a seigneurial fiefdom. These privileges were then passed on to his successors, among them João das Regras and the Counts of Monsanto, and later the Marquess of Cascais. Meanwhile, despite its conquest and