Genevieve

Saint Genevieve , is the patron saint of Paris in the Roman Catholic and Eastern Orthodox traditions. Her feast day is kept on January the 3rd.

She was born in Nanterre and moved to Paris after encountering Germanus of Auxerre and Lupus of Troyes and dedicated herself to a Christian life. In 451 she led a prayer marathon that was said to have saved Paris by diverting Attilas Huns away from the city. When Childeric I besieged the city in 464 and conquered it, she acted as an intermediary between the city and its conqueror, collecting food and convincing Childeric to release his prisoners.

Source: Wikipedia