Geoffrey Leigh was an archon under Justicar Violetta of clan Toreador. In the V20 timeline, he was appointed as the next Justicar of Clan Gangrel, despite Xaviar deciding on behalf of his Clan to abandon the sect.
Born under the name Justinian in the Byzantine Empire, Leigh was originally a noble whose holdings lay near the frontiers and who had to fight several times against the Seljuk Turks. After a disastrous battle which resulted in the death of all soldiers under his command, Leigh refused to give up, determined to avenge the deaths of his followers by killing as many Turks as possible, accepting his imminent death.
His ferocity and courage impressed the leader of the Turkish troops, a Gangrel in disguise. He met Leigh personally in battle, goading him to ever greater feats of skill. When he was content with Leigh's performance, he Embraced him and left him to fend for himself. Leigh traveled the world afterward, changing his name after Constantinople had been conquered. When he heard of the formation of the Camarilla, Leigh traveled to Paris and offered his services. He had served as an archon since the 1400s under Violetta, valuing the life of an archon and Violetta as his lover.
Leigh was later dispatched to London after the Great Fire in 1666, ensuring Mithras' loyalty to the Camarilla (which was somewhat shaky due to personal history between Mithras and Hardestadt). Leigh was later responsible for saving the unlife of Valerius, Mithras' seneschal, from a traitorous Gangrel. His whereabouts after 1848, when Violetta was assigned to Boston, are unknown.