Frances Isabelle Lockwood Brundage (1854–1937) was an American illustrator best known for her depictions of attractive and endearing children on postcards, valentines, calendars, and other ephemera published by Raphael Tuck & Sons, Samuel Gabriel Company, and Saalfield Publishing. She received an education in art at an early age from her father, Rembrandt Lockwood. Her professional career in illustration began at seventeen when her father abandoned his family and she was forced to seek a livelihood.