Complex sentence: General James Ewell Brown (Jeb) Stuart Jr. is a fictional character in Harry Turtledove's Timeline-191 series, although in real life Jeb Stuart did have a son by that name.
Split into simpler sentences: General James Ewell Brown (Jeb) Stuart Jr. is a fictional character in Harry Turtledove's Timeline-191 series. In real life his father Jeb Stuart did have a son by that name.