Original: ISBN 0679443541 Sullivan Macy , born Johanna Sullivan ( April 14 , 1866 -- October 20 , 1936 ) , was a teacher best known as the instructor and companion of Helen Keller .
Simplified: Anne Sullivan ( April 14 , 1866 -- October 20 , 1936 ) was a teacher best known as the tutor of Helen Keller .