Mildred Washington died on Oct 23, 1740. Mildred Washington was Augustine Washington and Mary Ball’s youngest child and George Washington’s infant sister. The family Bible records her birth on June 21, 1739, and death on October 23, 1740, aged one year and four months. The Bible anchors her short life before George’s military career. She is distinct from his grandmother Mildred Warner and later Washington nieces named Mildred. Her cause of death and burial place have not been established. The available account does not establish a medical cause or a dependable sequence of final symptoms and care.