St. Demetrius of Thessaloniki (Άγιος Δημήτριος της Θεσσαλονίκης in Greek) and St Nestor of Pamphylia
At this, emperor Maximian order the execution of both Nestor and Demetrius. Saint Nestor was beheaded while Saint Demetrius was run through with spears ca 306. Demetrius was extremely popular in the Middle Ages and, along with Saint George, he was the patron of the Crusades.
And St. Michael the Archangel! Click on the link for the full prayer of Pope Leo XIII.