Saint Eugene Martyr of Sebaste was one of the Five Companions who suffered for Christ under the emperor Diocletian (284-305) at Sebaste, in Armenia. Saints Eustratius, Auxentius, Mardarius, and Orestes were the other four. St. Eugene’s tongue was ripped out, his hands and feet were cut off, and then he was beheaded with a sword.

Saint Agatha Martyr of Sicily (†251) is venerated as a saint and martyr in the Roman Catholic Church, Eastern Orthodox Church, and Oriental Orthodox Churches. She is a holy patron of bellfounders; breast cancer; bakers; Catania, Sicily; protection from natural disasters; fire; earthquakes; volcanic eruptions; jewelers; nurses; rape victims; single laywomen; sterility; torture victims; nurses; wet nurses; as well as Sicily; San Marino; and Zamarramala, Spain. Her feast day is commemorated on February 5th.

Saint Concordius, Martyr of Spoleto was Christian saint and martyr of the 2nd century who began his life as a subdeacon in Rome imprisoned during the Christian persecutions of Marcus Aurelius and tried in Spoleto, Italy. Concordius was allowed his freedom if he would denounce his faith and worship a statue of the Roman god Jupiter. When Concordius refused, the judge had him beaten on a rack. After the torture however, Concordius praised Jesus, after which he was thrown in jail. Two days later, he was offered a second chance and presented with a statue to worship. Concordius then spat on the idol and was promptly beheaded, c.175 AD. Concordius was canonized by religious officials at that time, and his feast day is commemorated by the Roman Catholic church on January 2 and by the Eastern Orthodox on June 4.

Saint Modestus, Martyr († c. 304) was educator of St. Vitus and martyr under Diocletian.

Saint Dominic (Spanish: Santo Domingo), also known as Dominic of Osma and Dominic of Caleruega, often called Dominic de Guzmán and Domingo Félix de Guzmán (†1221), was a Castilian priest and founder of the Dominican Order. He is a holy patron of Astronomers; astronomy; Dominican Republic; falsely accused people; Santo Domingo Pueblo, Valletta, Birgu (Malta), and Managua. 

Saint Dionysius the Areopagite​ (†1st century A.D.) was a judge converted to Christianity by the preaching of the Apostle Paul during the Areopagus sermon​ ​and became the ​Protobishop of Athens. He is venerated as a saint in Roman Catholic and Eastern Orthodox churches.​ He is a Holy Patron of lawyers.

Saint

Ignatius of Antioch (†c. 107), also known as Ignatius Theophorus was an early Christian writer and bishop of Antioch. En route to Rome, where he met his martyrdom, Ignatius wrote a series of letters​ which now form a central part of the later collection known as the Apostolic Fathers​ and serve as an example of early Christian theology. Important topics they address include ecclesiology, the sacraments, and the role of bishops. In speaking of the authority of the church, he was the first to use the phrase "catholic church" in writing, which is still in use to this day. His feast day was kept in his own Antioch on 17 October, the day on which he is now celebrated in the Catholic Church and generally in western Christianity.​ In the Eastern Orthodox Church it is observed on 20 December.