Archdiocesan Coat of Arms
A pallium divides the shield into three fields. On chief azure is a rose drawn in natural form. Both the rose and the blue background represent Our Lady of Peñafrancia, the patroness of the Bicol Region.
On dexter is an eagle argent nimbed holding an open book proper from which issues a thunderbolt gules. A "nimbed" eagle is one with a halo or aureole. This silver eagle against the gold background represents St. John the Apostle and Evangelist, the titular of the Cathedral at Naga. The open book represents the Gospel. The thunderbolt alludes to the nickname “Boanerges” given by our Lord to St. John and his brother James, meaning sons of thunder.
On sinister against a red background are the three mountains, representing Mounts Mayon, Isarog, and Bulusan. Above the mountains are the insignia of the Franciscan Order, and below the mountains is a green palm branch drawn diagonally with the sinisterwise. This group of sybols alludes to the Franciscan St. Peter Baptist who was martyred in Japan among other Japanese martyrs on 6 February 1597, who was erroneously considered bishop-elect for the see of Nueva Caceres at the time of his martyrdom, and hence is venerated as the secondary patron saint of the cathedral
- Madriaga, M. (n.d.). The Coat of Arms of the Ecclesiastical Jurisdictions in the Philippines.