Complex sentence: Johan Fredrik Höckert (26 August 1826--16 September 1866) was a well-known Swedish artist from Jönköping known for his colorful, dramatic paintings depicting historical events.
Split into simpler sentences: Johan Fredrik Höckert (26 August 1826--16 September 1866) was a well-known Swedish artist from Jönköping. He is known for his colorful, dramatic paintings depicting historical events.