Lethbridge-Stewart's universe (The Forgotten Son)

One universe, with divergences focused on the life of Alistair Gordon Lethbridge-Stewart and the wider Lethbridge-Stewart family, was created when the Great Intelligence went back in time and interfered with its own history; despite not being the "original timeline", (PROSE: The Forgotten Son, Night of the Intelligence) the Accord would describe this reality as the essential timeline or timeline zero from which the entire multiverse stemmed. (PROSE: The Shadowman, Home Fires Burn)