ALL SAINTS CELEBRATED IN MARCH Saints celebrated on the 18th of March WELCOME! SAINTS PRINCIPINUS AND TRIDORIUS, MARTYRS Saints Principinus and Tridorius - commemorated on March 18 - were two holy martyrs whom the Bollandists * mention among their Praetermissi . In some martyrologies, they are listed under April 18 (II. 614). (Information from Stadler 's Complete Encyclopedia of Saints, Volume 4, Augsburg, 1875, p. 983) Stadler's Complete Encyclopedia of Saints - Sources and Abbreviations PRAYER: Grant, we beseech you, almighty God, that the venerable feast of Saints Principinus and Tridorius may increase our devotion and promote our salvation. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, God, for ever and ever. Amen. Sources of these articles (in the original German): books.google.co.uk, de-academic.com, zeno.org, openlibrary.org