Liesse-Notre-Dame (Our Lady of Joy) is a center of Marian pilgrimage, and was a favorite shrine of Princess Henrietta Maria of France.
[2] On her way to Liesse, in company with her mother, Marie de' Medici, and sister-in-law, Anne of Austria, she happened to pass through La Fère on the day of the infant Boudon's christening.
[3] Not long after his christening, his parents made a pilgrimage to Liesse, where his mother dedicated the child to Mary, Queen of Angels and invoked her protection of him.
During his visitations to various ecclesiastical sites, the Archdeacon was particularly dismayed at the deplorable conditions he found in many domestic chapels of the chateaux of the privileged.
A recurring theme in Boudon's work, characteristic of the French school, was the idea that the search for God requires detachment from all creatures.