August 12, 1859, Falmouth, Massachusetts.
March 28, 1929, at her home in Wellesley, Massachusetts.
Oak Grove Cemetery, Falmouth, Massachusetts.
Katharine was the daughter of clergyman William Bates and Cornelia Frances Lee.
She attended Wellesley College, then taught at Natick High School and Dana Hall in Wellesley. In 1885, she joined the faculty of Wellesley College as an English instructor, becoming a full professor in 1891. She retired in 1925 and became a Professor Emeritus.