Edward Longford was a dark-haired young Shadowhunter whose parabatai was Endarkened during the Dark War by Sebastian Morgenstern. During the siege of the Adamant Citadel, Longford went, in hopes of seeing his parabatai. When he did, Longford ended up killing him/her, though whether he intended to do it or merely had to after being engaged is unknown. Longford cried over his/her body, even once spotted by Clary Fray, before he cut his own wrists with his sword.