Portuguese architect and urban planner. He was apprenticed in the construction of the Palacio de Mafra. He later collaborated with Machado de Castro on the equestrian statue of José I raised in the Praça do Comércio in Lisbon. He worked on several new churches in Lisbon. During the reign of Maria I, together with Mateus Vicente de Oliveira, he worked on the Basílica da Estrela in Lisbon. The church was incomplete at the time of de Oliveira's death and work continued under the direction of dos Santos, who was responsible for much of the classical details of the church's exterior. //