S. Petri Martyris ~ III. classis

From divinumofficium:

Oratio V. Dóminus vobíscum. R. Et cum spiritu tuo. Orémus. Præsta, quaesumus, omnípotens Deus: ut beáti Petri Martyris tui fidem cóngrua devotióne sectémur; qui, pro eiúsdem fídei dilatatióne, martýrii palmam méruit obtinére. Per Dominum nostrum Iesum Christum, Filium tuum: qui tecum vivit et regnat in unitate Spiritus Sancti Deus, per omnia saecula saeculorum. R. Amen.

Collect V. The Lord be with you. R. And with thy spirit. Let us pray. Grant us grace, we beseech thee, O Almighty God, to follow with zeal conformable thereto after the pattern of that great ensample of faith, thy blessed Martyr Peter, who, for the spreading of the same faith, did so run as to obtain the palm of martyrdom. Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, ever one God, world without end. R. Amen.

From the Office of Matins:

Lectio 3 Petrus, Verónæ paréntibus Manichæórum hæresi inféctis natus, ab ipsa pene infántia contra hæreses pugnávit, nullis umquam patris patruíve blandítiis a fídei constánti dimótus. Adoléscens Bonóniam studiórum causa venit, ibíque órdinis Prædicatórum institútum suscépit; in quo et magno virtútum splendóre, præcípue córporis animæque puritáte nullo umquam letháli peccáto fœdáta, et miro pœniténtiæ et contemplatiónis stúdio excélluit. In salútem animárum procurándam máximo cum fructu incúbuit, tanto fídei ardóre incénsus, ut pro ea mortem subeúndi grátiam a Deo precarétur; quam et obtínuit. Nam cum sanctæ Inquisitiónis munus gerens Como Mediolánum redíret, ab ímpio sicário in cápite gládio est vulnerátus; iamque pene mórtuus, symbolum fídei, quam ab infántia viríli fortitúdine defénderat, in ipso suprémo spíritu pronúntians, ad palmam martyrii evolávit, anno salútis millésimo ducentésimo quinquagésimo secúndo. Quem Innocéntius quartus anno sequénti, sanctórum Mártyrum número adscrípsit.

Reading 3 Peter was born in Verona of parents infected with Manichaeism, but almost from his infancy fought against heresies, and no persuasions of his father or his uncle could move him from holding to the faith. As a young man he went to Bologna to study and there joined the Order of Preachers. As a religious he gave a shining example of virtue, especially by his purity of body and soul, never sullied by mortal sin, and excelled in his wonderful zeal for penance and contemplation. He devoted himself most fruitfully to gaining the salvation of souls, and was kindled with such zeal for the faith that he asked God for the grace of dying for it, a favour which was granted him. For, while he was carrying out the work of the Holy Inquisition and on his way back from Como to Milan, he was wounded in the head by the sword of a wicked assassin. Nearly dead, he repeated with his last breath the symbol of the faith which he had defended with manly fortitude from his childhood, and gained the palm of martyrdom in the year of salvation 1252. A year later, Innocent IV enrolled him among the holy Martyrs.