St. Volodymyr's Parish

Sts Isaac, Dalmatus and Faustus, ascetics of the Dalmatian Monastery, Constantinople (5th c.)

St Isaac is also commemorated May 30; see his life there. St Dalmatus was a soldier in the Imperial army, but along with his son Faustus left all to become a monk at the monastery founded by St Isaac. He was present at the Third Ecumenical Council at Ephesus in 431; there he labored zealously for the Orthodox faith against Patriarch Nestorius. He was made Archimandrite of all the monasteries in Constantinople, and reposed in peace, having lived for more than eighty years.

source: http://www.abbamoses.com