Only child

Dean was an only child. Yvonne Hartman considered not hiring him at Torchwood One because of this. (AUDIO: Through the Ruins)

Matt Stevens was an only child. (TV: Day One)

Lizzie Lewis was the only child of Mabel Ann Lewis. (TV: Ghost Machine)

Mrs Wormwood claimed Luke Smith as her only child. (TV: Enemy of the Bane)