Simplify the following text for a Grade 5 native English-speaking person.
Original: Wonders of the Invisible World , describing the Salem Witch Trials , is one of Cotton Mather 's best-known books , and the witch trials themselves are what Mather is well known for .
Simplified: Cotton Mather was the son of minister Increase Mather . He is most well known for his connection to the Salem witch trials .