In September 1812 the population vowed solemnly the Constitution of Cadiz. The confiscation of church property in the 19th century affected Guadamur to the extent that many neighbours, who had leased land in the municipality owned by the Catholic Church, saw how they were sold at auction. In some cases, the new owner terminated the contract, in others it increased. For example, one of the largest estates, Daramezas, passed from the hands of the nuns of the Monastery of Santo Domingo el Real de Toledo to private hands, and the estate of Aceituno, which belonged since 1221 to the Toledan convent of San Clemente, came to lay hands. In some cases the lands were purchased by tenants of the villa.