Complex sentence: A magnetic and charismatic figure, he was involved at that time in several liaisons with prominent women, through whom he invariably furthered his interests; he took little or no interest, however, in the children reported at that time to have been fathered by him.
Split into simpler sentences: A magnetic and charismatic figure, he was involved at that time in several sexual liaisons with prominent women, but these were invariably devices aimed at furthering his interests. He took little or no interest in the children reported at that time to have been fathered by him.