 Among his other pupils were Zanobi Strozzi.From 1447 to 1449 Fra Angelico was back at the Vatican, designing the frescoes for the Niccoline Chapel for Nicholas V. The scenes from the lives of the two martyred deacons of the Early Christian Church, St. Stephen and St. Lawrence may have been executed wholly or in part by assistants.The small chapel, with its brightly frescoed walls and gold leaf decorations gives the impression of a jewel box.