Complex sentence: Daniel Mendoza (5 July 1764--3 September 1836) (often known as Dan Mendoza) was an English-Jewish prizefighter, who was boxing Champion of England 1792-1795 and is sometimes called the "father of scientific boxing".
Split into simpler sentences: Daniel Mendoza (5 July 1764--3 September 1836) (often known as Dan Mendoza) was an English-Jewish prizefighter, who was boxing Champion of England 1792-95. He is sometimes called the "father of scientific boxing".