Simplify the following text for a Grade 9 native English-speaking person.
Original: His father was member of the Carboneria in 1821 , one of his brothers and a brother-in-law were deputies , while Carlo Cafiero was always considered the ` black sheep ' of the family .
Simplified: His father was Carbonari in 1821 , one of his brothers and a brother-in-law were deputies , while Carlo Cafiero was always called the ` black sheep ' of the family .