Ganos Lal
From The Stargate Omnipedia
Lantean woman who may have lived among the last residents of Atlantis before their return to Earth after the first siege. The ascended Morgan Le Fay, pretending to be a hologram, claimed that her projected image was based on Ganos Lal -- before she was found out.
KEY EPISODE
The Pegasus Project - An ascended Morgan Le Fay, pretending to be a hologram, explains to Dr. Weir that she was created by Ganos Lal in her image.