Mathara

Mother Mathara was a member of Faction Paradox. When Fitz Kreiner arrived on one of the Faction's warships after having been sent through the Cold, Mathara initiated him into the Faction. (PROSE: Interference - Book One and Book Two)

One of her protégés from Earth (possibly Cousin Llewis) was considered a "very promising young cousin" by Olympia.

She later participated in the Faction Paradox invasion of Gallifrey. (PROSE: The Ancestor Cell)