Complex sentence: However, mediaeval records and chronicles are unclear as to whether Louis and Catherine produced any surviving descent in the male line; evidence just as easily suggests that the Bourbon-Bussets derived from an entirely uncanonical affair between Louis de Bourbon and a mistress.
Split into simpler sentences: However, mediaeval records and chronicles are unclear as to whether Louis and Catherine produced any surviving descent in the male line. Evidence just as easily suggests that the Bourbon-Bussets derived from an entirely uncanonical affair between Louis of Bourbon and a mistress.