Italy: Gallienus (218-268), 41st Roman emperor, from the book Romanorvm imperatorvm effigies: elogijs ex diuersis scriptoribus per Thomam Treteru S. Mariae Transtyberim canonicum collectis, c. 1583. Gallienus was the son of Emperor Valerian, and initially served as co-emperor alongside his father in 253, dividing the Roman Empire between them. While Valerian dealt with the East, Gallienus was tasked with dealing with the Germanic tribes of the West.