Complex sentence: The Bronfman family, one of the most influential Jewish families in the world, was made famous by Samuel Bronfman (1891-1971), who made a fortune in the distilled alcoholic beverages business during the 20th century through the family's Seagram Company.
Split into simpler sentences: The Bronfman family is one of the most influential Jewish families in the world. It owes its initial fame to Samuel Bronfman (1891-1971), who made a fortune in the alcoholic distilled beverage business during the 20th century through the family's Seagram Company.