[1] As bishop he faced the tasks of carrying through the reforms of the Council of Trent in his diocese in the wake of the destruction caused by the Dutch Revolt.
Dauvin was born in Namur in 1559, the son of Jean d'Auvin and Marie de Monbeek.
He was named bishop on 15 October 1614, in succession to François Buisseret who had been elected archbishop of Cambrai, and was consecrated on 22 November 1615.
The church of Boneffe Abbey, destroyed by rebel forces during the Revolt, was rebuilt and reconsecrated under his aegis.
In 1619 he had offices printed for the saints of his diocese in line with the Roman Breviary, either authoring the propers himself or authorizing them from the Jesuit Gilles du Monin (who went on to write Sacrarium perantiqui comitatus Namurcensis and dedicate it to Dauvin).