Question: How old was Mary when engaged to the person from whom São José dos Campos takes it's name?

Knowledge 1: São José dos Campos
São José dos Campos (, meaning Saint Joseph of the Fields) is a major city and the seat of the municipality of the same name in the state of São Paulo, Brazil. One of the leading industrial and research centers with emphasis in aerospace sciences in Latin America, the city is located in the Paraíba Valley, between the two most active production and consumption regions in the country, São Paulo ( from the city) and Rio de Janeiro (). It is the main city of the Metropolitan Region of Vale do Paraíba e Litoral Norte. A native of São José dos Campos is called a "joseense" (). [SEP] Knowledge 2: Mary, mother of Jesus
According to the apocryphal Gospel of James, Mary was the daughter of Saint Joachim and Saint Anne. Before Mary's conception, Anne had been barren and was far advanced in years. Mary was given to service as a consecrated virgin in the Temple in Jerusalem when she was three years old, much like Hannah took Samuel to the Tabernacle as recorded in the Old Testament. Some apocryphal accounts state that at the time of her betrothal to Joseph, Mary was 12–14 years old, and he was thirty years old, but such accounts are unreliable.
Knowledge 1: São José dos Campos
São José dos Campos (, meaning Saint Joseph of the Fields) is a major city and the seat of the municipality of the same name in the state of São Paulo, Brazil. One of the leading industrial and research centers with emphasis in aerospace sciences in Latin America, the city is located in the Paraíba Valley, between the two most active production and consumption regions in the country, São Paulo ( from the city) and Rio de Janeiro (). It is the main city of the Metropolitan Region of Vale do Paraíba e Litoral Norte. A native of São José dos Campos is called a "joseense" (). [SEP] Knowledge 2: Mary, mother of Jesus
The Protoevangelium of James, an extra-canonical book, has been the source of many Orthodox beliefs on Mary. The account of Mary's life presented includes her consecration as a virgin at the temple at age three. The High Priest Zachariah blessed Mary and informed her that God had magnified her name among many generations. Zachariah placed Mary on the third step of the altar, whereby God gave her grace. While in the temple, Mary was miraculously fed by an angel, until she was twelve years old. At that point an angel told Zachariah to betroth Mary to a widower in Israel, who would be indicated. This story provides the theme of many hymns for the Feast of Presentation of Mary, and icons of the feast depict the story. The Orthodox believe that Mary was instrumental in the growth of Christianity during the life of Jesus, and after his Crucifixion, and Orthodox Theologian Sergei Bulgakov wrote: "The Virgin Mary is the center, invisible, but real, of the Apostolic Church."
Knowledge 1: Mary, mother of Jesus
The Protoevangelium of James, an extra-canonical book, has been the source of many Orthodox beliefs on Mary. The account of Mary's life presented includes her consecration as a virgin at the temple at age three. The High Priest Zachariah blessed Mary and informed her that God had magnified her name among many generations. Zachariah placed Mary on the third step of the altar, whereby God gave her grace. While in the temple, Mary was miraculously fed by an angel, until she was twelve years old. At that point an angel told Zachariah to betroth Mary to a widower in Israel, who would be indicated. This story provides the theme of many hymns for the Feast of Presentation of Mary, and icons of the feast depict the story. The Orthodox believe that Mary was instrumental in the growth of Christianity during the life of Jesus, and after his Crucifixion, and Orthodox Theologian Sergei Bulgakov wrote: "The Virgin Mary is the center, invisible, but real, of the Apostolic Church." [SEP] Knowledge 2: Mary, mother of Jesus
According to the apocryphal Gospel of James, Mary was the daughter of Saint Joachim and Saint Anne. Before Mary's conception, Anne had been barren and was far advanced in years. Mary was given to service as a consecrated virgin in the Temple in Jerusalem when she was three years old, much like Hannah took Samuel to the Tabernacle as recorded in the Old Testament. Some apocryphal accounts state that at the time of her betrothal to Joseph, Mary was 12–14 years old, and he was thirty years old, but such accounts are unreliable.

Answer: 12–14 years old