Complex sentence: The original Elizabethan house, where Charles I was imprisoned in 1647 and Charles II took refuge before fleeing abroad, was gutted by fire in the 1830s and the present red brick Tudor style mansion was designed by Edward Blore and completed in 1863.
Split into simpler sentences: The original Elizabethan house where Charles I was imprisoned in 1647 and Charles II took refuge before fleeing abroad. The house was gutted by fire in the 1830s and the present red brick Tudor style mansion was designed by Edward Blore and completed in 1863.