Documents produced by the entail.

Entail foundation deed by Maria Fernandes da Póvoa, fulfiling the will expressed by her late husband, António de Madureira, fidalgo da casa do rei. Maria entailed properties in Porto, in the outskirts of the city and in other areas of the Entre Douro e Minho region. The estates were entailed and united "in an imaginary body" that could not be dismembered. The first administrator would be her first-born son, Diogo de Madureira, who would immediately take possession of the entail. Diogo and his successors were to ensure the celebration of perpetual masses in any church or monastery in Porto or in the locality where the administrator happened to live. The successors would be the first-born sons, excluding illegitimate children and clerics. If there was no legitimate descendant, the administrator could appoint a successor whose name was Madureira.

Opening of the will of António de Madureira and Maria Fernandes da Póvoa by Henrique Homem, fidalgo da casa do rei and vereador of the municipality of Porto, following the death of António de Madureira, at the request of his first-born son, Diogo de Madureira, acting as his mother's and brothers' attorney.

Will of António de Madureira and Maria Fernandes da Póvoa. The couple reserved their 'terças' to institute an entail. The surviving member of the couple would be the first administrator, to be followed by one of their sons or daughters, depending on who António or Maria considered more suitable for the task. After that, the succession was to pass through consanguineous kinship.

Followed by the approval deed (1554-08-14, fls. 197-197v).