Harriett Lothrop (June 22, 1844 - August 2, 1924) was an American author who also went by the pen name Margaret Sidney. She ran her husband Daniel Lothrop's publishing company following his death, in addition to producing popular children's novels. They worked hard after purchasing The Wayside country house to make it a hub of literary activity. Harriett Mulford Stone was born in 1844 in New Haven, Connecticut. She was "brought up in an atmosphere of culture and learning enhanced by free access to her father's large library," according to her father, New Haven architect Sidney Mason Stone. She attended nearby seminaries and graduated from Miss Dutton's School at Grove Hall in New Haven in 1862.
