Complex sentence: In the mid to late-1980s, however, Garvey engaged in a series of simultaneous romantic relationships, fathering of children with multiple women that led to him being the subject of national ridicule.
Split into simpler sentences: In the mid to late-1980s, however, Garvey engaged in a series of over-lapping relationships. He fathered children with multiple women that led to him being the subject of national ridicule.