Carthedia

 was a planet which acted as a government state for the Sunlight Worlds. It was recorded as a member of the Earth Alliance but was more closely affiliated with the Dalek Foundation.

Terrin and Alyst Blakely, along with their children, Sabel, Ollus and Jenibeth, all came from Carthedia, as did Hellic Dansard.

On a mission from Gethria to Carthedia, the charter ship KS55NZ/4 was attacked by Daleks, and Terrin and Alyst committed suicide to avoid revealing vital information to their attackers. The Eleventh Doctor answered their distress call, and discovered their three children, Sabel, Ollus, and Jenibeth. He then piloted the ship to Carthedia himself. (PROSE: The Dalek Generation)