Patrex Chapter

The Patrex Chapter (plural, Patrexes) is one of the Chapters of Time Lord society. The Patrexes wear heliotrope robes. (DW: The Deadly Assassin) The Patrexes are an order of artists and aesthetes, but they lacked any true imagination and are minor players in Time Lord politics. One of the duties of the Patrexians included scanning into the future as far ahead as possible. (source?)