first record of his work as an artist is from 1464, when at age 25 he was paid 12 lire for a statue of John the Baptist. He was married two times in quick succession when his first wife, Cristofana, died shortly after they were married in 1467. On January 26, 1469 he married Agnese, the daughter of Antonio di Benedetto di Neroccio, and possibly a relative of Neroccio di Bartolomeo de' Landi, with whom Di Giorgio shared a studio and an artistic partnership during these years. Early work in Siena (1471–1475) Di Giorgio's early years as a professional artist, architect, and engineer were full of a variety of projects. On top of various artistic commissions that he completed during this time, he and another engineer were given a contract by Siena to work on its aqueduct and fountain system, with the goal of adding about a third more water to the city's water supply. They were able to enlarge the fountain in the Piazza del Campo and make other improvements around the city, successfully fulfilling their contract in 1473. During this period, Di Giorgio was also working with assistants on The Coronation of the Virgin for the Santa Maria della Scala (Siena), a large painted altarpiece. Sienese records from 1471 describe an episode in which the artist and nine others broke into the Monastery of the Holy Saviour outside Siena and "behaved dishonorably" once inside. They were sentenced to be banished from the city for three months, or to pay a 25 lire fine, which Di Giorgio paid. Urbino (1475–1484) During the mid-1470s, Di Giorgio came into the employ of Federico da Montefeltro, Duke of Urbino. He created multiple artistic works for the Duke, including the bronze relief Deposition from the Cross and served as an architect and engineer for the duke during the Pazzi conspiracy. In the fighting between Italian city-states which followed, Di Giorgio constructed a series of great fortifications for his patron. This source of employment for Di Giorgio continued after da Montefeltro's death with his son the new duke. Architectural work also came to Di Giorgio through his employment with the Duke, including what is probably his most famous building, Santa Maria delle Grazie al Calcinaio in Cortona. The church was challenging to design due to the steep incline of its location, but Di Giorgio's skill with engineering and architecture allowed him to design a