Patrick O'Sullivan was the husband of Cathy O'Sullivan and the father of the Eighth Doctor's companion Molly O'Sullivan (AUDIO: Tangled Web) and seven other children. (AUDIO: Fugitives, X and the Daleks) Two of his sons and three of his daughters died before their fifth birthdays. He had two other sons, Patrick and Liam. Patrick joined the British Army during World War I and was killed on his first day in France while Liam remained in Ireland but was killed by an English sentry. (AUDIO: X and the Daleks)

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