Wally Mary McBride Baker (née Stiefel) (January 9, 1898 – April 8, 2009) was an American supercentenarian who was the oldest person ever from Delaware. She resided at Parkview Nursing home and Rehabilitation Center in Wilmington, Delaware. One of eight children, longevity runs in the Stiefel family. Her brother John lived to be 99, and sisters Emma and Anna lived to be 102 and 105, respectively.