Rubuta ci gaba don wannan sakin layi - Amma, bayan daidaitawa tare da Masarautar Castile a lokacin 1383 <unk> 1385 Portuguese interregnum
, shafin ya fara fadawa cikin rikici. A cewar marubucin tarihin Fernão Lopes, Monsanto ƙauye ne da ke da aminci ga Sarauniya Beatrice. Amma, daga baya, duk da haka, Lopes ya lissafa garin a cikin waɗanda suka haɗa kansu da D. John ta 1384. Farawa a cikin 1476, an sake gina yankin a lokacin mulkin Sarki D. John I, wanda ya haifar da gina barbican da kariya a kan rijiyar, babban ɗaki wanda ya kasance na dangin Castro (daga baya aka gano cewa yana samar da ruwa mai yawa ga shafin). A shekara ta 1496, "Inquirição" ya nuna mazauna 309.