George Maitland

George Maitland was the father of Artie Maitland and Angie Maitland, the children that Clara Oswald nannied for. (TV: The Bells of Saint John)

Behind the scenes
Although "Maitland" is never expressly given as George's name, it's highly likely to be so. "Maitland_Family" is the name of the household Wi-Fi network.