Gracia Mendes Nasi (Gracia is Portuguese and Spanish for the Hebrew Hannah, which means Grace; also known by her Christianized name Beatrice de Luna) 1510–1569 was one of the wealthiest Jewish women of Renaissance Europe. She married Francisco Mendes/Benveniste. She was the aunt and business partner of Joao Micas (alias, Hebrew name Joseph Nasi), who became a prominent figure in the politics of the Ottoman Empire. She also developed an escape network that saved hundreds of Conversos from the Inquisition.
Beatrice de Luna was born in Portugal in 1510. The family was from Aragon in Spain and were forcibly converted Jews known as Conversos (also called Crypto-Jews, Marranos and Secret Jews). So that they could still practice Judaism, the family had fled to Portugal when the Catholic Monarchs, Queen Isabella I of Castile and King Ferdinand II of Aragon, expelled the Jews in 1492. Five years later, in 1497, they were forcibly converted to Catholicism along with all the other Jews in Portugal at that time. Beatrice's father Alvaro de Luna was married to Philippe (Pha) Mendes|Benveniste.
In 1528, Beatrice de Luna married her uncle, the very rich black pepper trader and new Christian in Lisbon, Francisco Mendes. Francisco also happened to belong to the same very prominent Jewish family as her mother – Benveniste from Castile and Aragon – and was also the great grandchild of Don Abraham Benveniste of Castile. The couple were believed to have been married in the great cathedral of Lisbon, in a public Catholic wedding, and then to have had a Crypto-Judaic ceremony with the signing of a ketubah. Francisco Mendes and his brother, Diogo, were the directors of a powerful trading company and bank of world renown, with agents across Europe and around the Mediterranean. The House of Mendes/Benveniste probably began as a company trading precious objects and currency arbitrage. Following the beginning of the Age of Discovery and the finding, by the Portuguese, of a sea route to India, the Mendes brothers became particularly important spice traders. They also traded in silver – the silver was needed to pay the Asians for those spices. In January 1538, when Beatrice was only twenty-seven years old, Francisco died. In his will Francisco divided his fortune between Beatrice and his brother and business partner, Diogo; this bold decision put Beatrice on the path to becoming the successful and renowned business woman of the sixteenth century that we know her for today.