Tatham was a Jedi Master of the Male gender, and he dedicated his service to the Jedi Order throughout the Cold War and the Galactic War. These conflicts involved the Galactic Republic facing off against the Sith Empire which had returned to power.
During the year 3640 BBY, Tatham participated in the battle that occurred on the planet of Corellia alongside fellow Jedi Masters Rubatin, Joce, and Injaye. In their confrontation with the Emperor's Wrath, Rubatin and the other Jedi engaged the Sith Lord in combat, but ultimately, they were all overcome.