Simplify the following text for a Grade 8 native English-speaking person.
Original: Johann Strauss III ( February 16 , 1866 - January 9 , 1939 ; ; also known as Johann Eduard Strauss ) was an Austrian composer whose father was Eduard Strauss , whose uncles were Johann Strauss II & Josef Strauss , and whose grandfather was Johann Strauss I. He was unofficially entrusted with the task of upholding his family 's tradition after the disbandment of the Strauss Orchestra by his father in 1901 .
Simplified: Johann Strauss III ( February 16 , 1866 - January 9 , 1939 ) was an Austrian composer and conductor . He was the son of Eduard Strauss , the nephew of Johann Strauss II , and grandson of Johann Strauss I. He wrote several waltzes , as well as an operetta , Katze und Maus ( Cat and Mouse ) .