Will by which Diogo Fernandes de Elvas established an entail, designating his wife Isabel Mendes to be its first administrator if he died first. He ordered to be buried and the celebration of a daily masse in the Chapel of Santíssimo Sacramento, in the Church of Nossa Senhora da Conceição, where it was placed his family grave. After his wife's death, this entail should be succeed by his daughter Inês Manuel, married to Rui de Sousa da Veiga, due to the fact that his son Fernando Rodrigues de Elvas suffered from a mental illness. The institutor declared that his wife Isabel Mendes also confirmed that she wanted to found this entail using her third, as was confirmed by her own last will. After their daughter Inês Manuel's death it should succeed her husband Rui de Sousa da Veiga and after his death her eldest son, or daughter. If her succession line became extinct, it should succeed the institutor's eldest brother Manuel Rodrigues de Elvas and his heirs. He also nominated his wife Isabel Mendes and his son-in-law Rui de Sousa da Veiga to be his last will executors.