Will of Rui Mendes Mesquita, in which he declares that his body should be buried in the church of Nossa Senhora da Oliveira, in Guimarães. Together with his wife Margarida, they reserved their "terças" for the establishment of a "morgado", which would be attached to the chapel where Rui's father, Fernando Mesquita, was buried, also in the church of Nossa Senhora da Oliveira. They appointed their son, Fernando Mesquita, as the first administrator, stating that he would be obliged to entail his share of his parents' inheritance. He was to be succeeded by his first-born son. Clerics, illegitimate children and those who had committed lese-majeste crimes were excluded from the administration. Successors were also compelled to use the family name, to marry and to entail more property.

Followed by the approval deed (1546-08-16, fls. 10v-11).