Simplify the following text for a Grade 4 native English-speaking person.
Original: Their trial at Lancaster Assizes in England on 19 August 1612 was one in a series of witch trials held there over two days , among the most famous in English history .
Simplified: Their trial on 19 August 1612 was one of a series of witch trials held over two days . It is among the most famous in English history .