Apostle's Creed, Literally

Each Apostle contributes on of the twelve articles.
This theory is documented as early as the 6th century.
Cf. Raztinger, Revelación e Historia de la Salvación (1955), BAC: Madrid, 2013, 159.
I first came across this account on the walls of the sacristy of the Basilica of Saint James (Santiago de Compostela).