Raffaele Sansone Riario

Raffaele Sansoni Galeoti Riario (3 May 1461 – 9 July 1521) was an Italian Cardinal of the Renaissance, mainly known as the constructor of the Palazzo della Cancelleria and the person who invited Michelangelo to Rome. He was a patron of the arts. He was also the first adolescent to be elevated in the College of Cardinals in the history of the Holy See.

Born in poverty in Savona, Riario was the son of Antonio Sansoni and Violante Riario, a niece of Francesco della Rovere, who became Pope Sixtus IV in 1471.

Being the relative of a Pope Sixtus IV, he was created Cardinal of San Giorgio in Velabro on 10 December 1477 and was named Administrator of several dioceses: (diocese of Cuenca, diocese of Pisa, diocese of Salamanca, diocese of Treguier, diocese of Osma). These gave him a handsome income, and no obligations except to appoint a vicar. He was then only sixteen years old and a student of canon law at the University of Pisa. While returning to Rome in the spring of 1478, Riario halted in Florence, where he became a witness to the Pazzi Conspiracy against the Medici. Despite his innocence, Rafaelle was arrested by the Florentine authorities because he was a relation of the conspirators Girolamo Riario, his mother’s brother and the head of the plot, and the Archbishop Francesco Salviati. His release a few weeks later was arranged by Lorenzo de' Medici. On 22 June 1478 he was received formally as a cardinal by the Pope in Siena and four days later he was sent as legate to Perugia.

...
Wikipedia