Court of Principals
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The Court of Principals were an organisation on Gallifrey which governed the Academia.
They were subject to the authority of the Pythia. Lord Dowtroyal, a kinsman of Rassilon, was one of the leaders of this group. After Rassilon's takeover and the fall of Pythia, they probably formed the basis of the first High Council. (PROSE: Cat's Cradle: Time's Crucible)