In the medieval Christian church, Translation refers to the ceremony of relocating the body of a saint, usually to a higher-status location.

Wikipedia

The Translation of the remains of St Thomas Becket on Tuesday, 7^th July 1220, from the Eastern Crypt to the completed Shrine in the Trinity Chapel, took place “before such an assembly as had never been collected in any part of England before”.

Cardinal Archbishop Stephen Langton (the drafter of the 1215 Magna Carta) presided in a ceremony of such splendour that it was to dazzle the Christian Church in Northern Europe for the next three centuries.