The Cybo-Soderini Chapel () or the Chapel of the Crucifixion () is a side chapel of the Basilica of Santa Maria del Popolo, Rome. Its most important works of art are the frescos of a Flemish artist, Pieter van Lint from c. 1636-37. History According to 16th-century archival sources the chapel was founded by Teodorina Cybo (c. 1455-1508), the natural daughter of Pope Innocent VIII. She was married to a Genovese gentleman, Gherardo Usodimare who was appointed depositario generale (treasurer) of the papal court. The concession document of the chapel has not been preserved but it was probably granted during the Cybo papacy when another side chapel in the basilica was acquired by Cardinal Lorenzo Cybo de Mari, the pope's favourite nephew. In 1499 Gherardo Usodimare died suddenly after having a dinner with his cousin-in-law, and he was buried in the basilica with great honor, supposedly in his own family chapel. Theodorina survived her husband by nine years and died in 1508. Giovanni Antonio Bruzio in the 17th-century stated that Teodorina Cybo assigned the revenues of a house in the Borgo district for the maintenance of the chapel but the building was demolished when the new colonnade on St. Peter's Square was built. The chapel was first mentioned in a contemporary document in 1530 as "capella Crucifixi" when the concession was renewed for Teodorina's son, Giambattista Usodimare (Cybo), the Bishop of Mariana. The bishop made an endowment of 30 gold scudi for the maintenance of the chapel instead of the house in the Borgo which had been destroyed during the Sack of Rome in 1527. In his will, dated to 1 December 1531 the bishop expressed his wish to be buried in the chapel and left the task to his heirs to erect a decent monument. At the time the chapel contained the burials of Teodorina and her husband. The bishop also donated valuable velvet and satin hangings. In 1555 the heirs, Cesare Cybo, the archbishop of Turin and Francesco Cybo renewed the endowment of the house in the Borgo which had been restored. The altar was consecrated on 18 October 1595. There is not much left of the original Renaissance interior of the chapel except the large crucifix on the altar and the slabs of the beautiful marble transenna. It is uncertain whether it had any painted decoration. The chapel was fully restored after 1636 in Baroque style by