Complex sentence: Uchee Billy was a well known chief during the Second Seminole War, who was captured with his brother Jack in 1837 by General Hernandez, the same General who captured Osceola.
Split into simpler sentences: Uchee Billy was a well known chief during the Second Seminole War. He was captured in 1837 with his brother Jack by General Hernandez, who also captured Osceola.