 The workshop of Hubert de Sainte-Martin (Michaēl Messonnet) of Quintin were responsible for the depictions of the people represented.The original window which dated from 1416 to 1424 had, by 1820, almost completely disintegrated.In the first lancet of the remade window we see François, the Count of Monfort (1410 to 1450), the son of Jean V and the future François 1st of Bretagne (1442 to 1450).