Catholic Encyclopedia
St. Margaret, also known in the Christian East as St. Marina, virgin and martyr from Pisidian Antioch.
Catholic Online
St. Margaret is one of the Fourteen Holy Helpers. Feast day is 20 July.
For All the Saints
Notes on St. Margaret of Antioch, or Margaret of the Latins. Suggests that she died around 304 in the Diocletian persecution.
Patron Saints Index
Profile of St. Margaret of Antioch. Illustrated. Calls her apocryphal.