Tragedy in the mountains has proved a recurring theme in the Mallory line. Mallory's younger brother, Air Chief Marshal Sir Trafford Leigh-Mallory, met his death on a mountain range when the Avro York carrying him to his new appointment as Air Commander-in-Chief of South East Asia Command crashed in the French Alps in 1944, killing all on board. A memorial window to George Mallory along with a memorial plaque to Trafford can be found at St Wilfrid's Church, Mobberley, where their father, Herbert, grandfather, also called George, and other family members had served as rector. Mallory's daughter, Frances Clare, married physiologist Glenn Allan Millikan, who was killed in a climbing accident in Fall Creek Falls State Park, Tennessee.