Florence Louisa Barclay (December 2, 1862 - March 10, 1921) was an English romance novelist and short story writer. She was born Florence Louisa Charlesworth in Limpsfield, Surrey, England, the daughter of the local Anglican rector. One of three girls, she was a sister to Maud Ballington Booth, the Salvation Army leader and co-founder of the Volunteers of America. When Florence was seven years old, the family moved to Limehouse in the London Borough of Tower Hamlets.