 Ferdinand was canonized in 1671 by Pope Clement X.Places such as the cities of San Fernando, Pampanga and San Fernando, La Union; the Diocese of Ilagan and the San Fernando de Dilao Church in Paco, Manila in the Philippines; and in California, United States, the City of San Fernando and the San Fernando Valley, were all named after him (namesakes) and placed under his patronage.The exact date of Ferdinand's birth was unclear.