Virgin and martyr; belonged to Pisidian Antioch in Asia Minor, where her father was a pagan priest. Her mother dying soon after her birth, Margaret was nursed by a pious woman five or six leagues from Antioch. Having embraced Christianity and consecrated her virginity to God, she was disowned by her father and adopted by her nurse.
While she was one day engaged in watching the flocks of her mistress, a lustful Roman prefect named Olybrius caught sight of her, and attracted by her great beauty sought to make her his concubine or wife. When neither cajolery nor threats of punishment could succeed in moving her to yield to his desires, he had her brought before him in public trial atAntioch. Threatened with death unless she renounced the Christian faith, the holy virgin refused to adore the gods of the empire and an attempt was made to burn her, but the flames, we are told in her Acts, left her unhurt. She was then bound hand and foot and thrown into a cauldron of boiling water, but at her prayer her bonds were broken and she stood up uninjured. Finally the prefect ordered her to be beheaded.
The Greek Church honors her under the name Marine on 13 July; the Latin, as Margaret on 20 July. Her Acts place her death in the persecution of Diocletian (A.D. 303-5), but in fact even the century to which she belonged is uncertain. St. Margaret is represented in art sometimes as a shepherdess, or as leading a chained dragon, again carrying a little cross or a girdle in her hand, or standing by a large vessel which recalls the cauldron into which she was plunged. Relics said to belong to the saint are venerated in very many parts of Europe; at Rome, Montefiascone, Brusels, Bruges, Paris, Froidmont, Troyes, and various other places. Curiously enough this virgin has been widely venerated for many centuries as a special patron of women who are pregnant.
(Taken from Catholic Encyclopedia)