Simplify the following text for a Grade 8 native English-speaking person.
Original: The Latin and American section of the Imperial Society of Teachers of Dancing ( ISTD ) Ballroom Branch was formed in 1947 by Monsieur Pierre as Chairman , his partner Doris Lavelle , and colleague , Doris Nichols .
Simplified: The Latin and American section of the ISTD Ballroom Branch was formed in 1947 by Monsieur Pierre as Chairman .