Dum pater familias, rex universorum, donaret provincias jus apostolorum, Iacobus Yspanias lux illustrat morum.
Primus ex apostolis martir Iherosolimis, Iacobus egregio sacer est martirio.
(Génitif) Iacobis Gallecia opem roget piam, glebe cujus gloria dat insignem viam : ut precum frequentia cantet melodiam.
Herru Sanctiagu, got Sanctiago, eultreia, esus eia, Deus, aia nos. Primus ex apostolis...
(Datif) Iacobo dat parium - omnis mundus gratis ; ob cuius remedium - miles pietatis cunctorum praesidium - est ad vota satis. Primus ex apostolis...
(Accusatif) Iacobum miraculis - quae fiunt per illum, arctis in periculis - acclamet ad illum, quisquis solui vinculis - sperat per illum. Primus ex apostolis...
(Vocatif) O beate Iacobe, - virtus nostra vere, nobis hostes remove - tuos et tuere, ac devotos adhibe - nos tibi placere. Primus ex apostolis...
(Ablatif) Iacobo propicio veniam speremus, et quas ex obsequio merito debemus patri tam eximio dignas laudes demus ; amen. Primus ex apostolis... _____________________________________________
Translation:
[The pilgrims' hymn]
When God the Father, the universal king, gave each apostle authority over an [earthly] province, James, shining light of virtue, was chosen to enlighten Spain.
First among apostles martyred Jerusalem, James is sanctified By his illustrious martyrdom.
(Genitive) Galicia seeks James's holy aid; his glory lights the way. Let the assembly sing songs of worship:
'Herru Sanctiagu, Got Sanctiagu, Eultreya esuseya, God help us.' First among apostles...
(Dative) The whole world freely gives thanks to James, the champion of godliness; Through his help he protects and comforts all, answering our prayers. First among apostles...
(Accusative) He who hopes to be freed from his bonds, for James's sake, Calls on his name when in danger because of the miracles He accomplished. First among apostles...
(Vocative) O Saint James, our true strength, take from us our enemies And protect your people, and help us to please you By our devotions. First among apostles...
(Ablative) James, by your favour, let us hope for forgiveness, And let us give praise th the almighty Father, The praise that we owe And is deserved by him. First among apostles...