His cult spread rapidly far and wide throughout Europe in the Middle Ages, as is witnessed by the numberless churches and monasteries dedicated to him in France, Germany, Poland, Hungary, and the British Isles; by the numerous manuscripts in prose and verse commemorating his virtues and miracles; and especially by the vast concourse of pilgrims who from all Europe flocked to his shrine. In 1562 the relics of the saint were secretly transferred to Toulouse to save them from the hideous excesses of the Huguenots who were then ravaging France, and the pilgrimage in consequence declined. With the restoration of a great part of the relics to the church of St. Giles in 1862, and the discovery of his former tomb there in 1865, the pilgrimages have recommenced. Besides the city of St-Gilles, which sprang up around the abbey, nineteen other cities bear his name, St-Gilles, Toulouse, and a multitude of French cities, Antwerp, Bridges, and Tournai in Belgium, Cologne and Bamberg, in Germany, Prague and Gran in Austria-Hungary, Rome and Bologna in Italy, possess celebrated relics of St. Giles. In medieval art he is a frequent subject, being always depicted with his symbol, the hind. His feast is kept on 1 September. On this day there are also commemorated another St. Giles, an Italian hermit of the tenth century (Acta SS., XLI, 305), and a Blessed Giles, d. about 1203, a Cistercian abbot of Castaneda in the Diocese of Astorga, Spain (op. cit. XLI, 308).
From the Catholic Encyclopedia