Scottish Highlanders were organised into clans. (TV: The Highlanders)
Rimikugih, Presonil, Esinallihall, Siridih and Onihinallall were clans on Venus. (PROSE: Venusian Lullaby)
The Eighth Doctor described the ultimately violent contact between the Mutant Daleks of Red Rocket Rising and the original Daleks of Skaro as a "meeting of the clans". (AUDIO: Blood of the Daleks)