Kosh appearing as G'Lan in 2259.
G'Lan was an ancient Narn religious figure, depicted as a being of light.
G'Lan was known to have appeared Circa 1260 during the time of G'Quan and along with a number of other such beings, supported G'Quan when the darkness came to Narn Homeworld.
In 2259, when Kosh revealed himself to save Sheridan from falling to his death, all the observing Narns saw him.
Na'Toth's father was a disciple of G'Lan.