Simplify the following text for a Grade 4 native English-speaking person.
Original: After the death of Conrad , the city was destroyed by his brother Manfred in 1259 , but soon rebuilt by Charles I of Anjou , its successor as king of Sicily .
Simplified: When Conrad died , his brother Manfred destroyed the town in 1259 . Charles I of Anjou , king of Sicily , built it again soon .