[1] He is honoured in Cornwall at St Maddern's Church in the village of Madron.
[2][3] Madron was born in Cornwall and was a disciple of Saint Ciarán of Saigir.
John T. Koch [5] has suggested that the saint was not a historical figure but rather a Christianisation of the Mythical Celtic Modron the mother goddess.
Indeed, some aspects of the veneration at Madron's well do appear to derive from Pagan origins.
Others [6][7] have suggested that the saint's life is a retelling of the story of St. Madrun, a daughter of Vortimer, a king of Gwent.