Complex sentence: Though there is a "vita" that purports to be written by a contemporary, Geneviève's history cannot be separated from her hagiography, which describes her as a peasant girl of Nanterre born to a Frankish father and a Gallo-Roman mother.
Split into simpler sentences: Though there is a "vita" that purports to be written by a contemporary, Geneviève's history cannot be separated from her hagiography. She was described as a peasant girl born in Nanterre to a Frankish father and a Gallo-Roman mother.