Cousin was the most populous rank in Faction Paradox. (PROSE: The Book of the War) The term was originally used by Time Lords to mean "anyone of the same House", (PROSE: Lungbarrow, The Book of the War) but it was archaic by the time of the War.
Each Cousin had a rudimentary training in the Faction's techniques, and they received a shadow-weapon as part of their initiation into the rank. Most Cousins lived outside the Eleven-Day Empire tending to the Faction's interests and colonies in the rest of the universe. (PROSE: The Book of the War)