• On the left is St. John the Baptist and, on the right, St. John the Evangelist. Originally dedicated to Christ the Savior in 324, Pope Sergius III (904-911) added John the Baptist and Pope Lucius II (1144-1145) added John the Evangelist

 

Artist: Agostino Ciampelli

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• In the second triumphal arch are the evangelists. On the left, is St. John the Evangelist and, on the right, St. Matthew. St. Luke and St. Mark are not pictured here but are on the opposite side

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• In the third triumphal arch are doctors of the church