Lydia Childs
From Tardis Wiki, the free Doctor Who reference
Lydia Childs was an employee for the Torchwood Institute around world war one time. She was based in Cardiffs Torchwood 3 base looking at the Rift. Her fellow workers were Harriet Derbyshire, Douglas Caldwell, and Charles Quinn as well as her boss Gerald Carter. (TW:To the Last Man)