(Saints) Martyrs (December 16) (4th century) Martyrs at Ravenna in Italy. Valentine, an officer in the Imperial army, the father of Concordius, was converted to Christianity by Saint Dalmatius of Pavia. Navalis and Agricola are simply described as fellow-sufferers with the father and son (A.D. 304).
- Monks of Ramsgate. “Valentine, Concordius, Navalis and Agricola”. , 1921. CatholicSaints.Info. 14 December 2016. Web. 28 April 2017. <>