Tags: Saint.
Anthony John and Eustathius (Eustathios Eustace; Russian: Антоний Иоанн and Евстафий) are saints and martyrs (died 1347) of the Russian Orthodox Church. Their feast day is celebrated on April 14 in the horologion.They were attached to the Muscovite missionaries dispatched to the court of Algirdas pagan Grand Duke of Lithuania. Algirdas was married to an Orthodox Christian princess Maria of Vitebsk and the Orthodox were permitted only to minister to the religious needs of the princess.
