| Salaün ar Foll - Ermite and Saint Local | Inspired the foundation of the sanctuary. |
| Jean IV de Bretagne - Duke of Brittany | At the origin of the vow of construction. |
| Jean V de Bretagne - Duke of Brittany (1399–1442) | Consecrate the basilica in 1423. |
| Anne de Bretagne - Duchess and Queen | Finances the north arrow (1505). |
| Alain de Coëtivy - Cardinal and donor | Set the South Calvary. |
| Émile Hirsch - Glass painter (XIXe) | Designs the current stained glass windows. |
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