St Abbo II of Metz
St Abbondio
St Acuta
St Anastasia of Rome
St Basilissa of Rome
Bl Cesar de Bus (1544-1607)
Biography: https://anastpaul.wordpress.com/2017/04/15/saint-of-the-day-15-april-bl-cesar-de-bus/
St Crescens of Myra
St Eutyches of Rome
St Eutychius of Ferentino
St Huna of Slättåkra
St Hunna (of Strasbourg) (died 679)
The life of St Hunna: https://anastpaul.wordpress.com/2018/04/15/saint-of-the-day-15-april-st-hunna-died-679/
Bl Laurentinus Sossius
St Maro of Rome
St Maximus of Persia
St Mundus
St Nidger of Augsburg
St Olympiades of Persia
St Ortario of Landelles
St Paternus of Vannes
St Pausilopo of Thrace
St Ruadhan of Lorrha (died 584)
St Sylvester of Réome
St Theodore of Thrace
St Victorinus of Rome
St Waltmann of Cambrai
Mercedarian Martyrs of Africa: A group of Mercedarian monks sailing to Africa as on a mission to redeem capture Christians. Captured by Moors, they were tortured and executed for their faith. Martyrs. 1393