sentences:  In 1658, Colonna left Italy to go to Spain to work for Philip IV of Spain; he had initially been contracted for this work by Diego Velázquez.He was to return to Italy in 1662, where his collaborator now was Mitelli's pupil, Giacomo Alboresi (1632–1677).He continued to be prolific in Bologna, decorating the Palazzo Cospi-Ferreti, Bologna and a chapel in the church of San Bartolomeo (1667).