Pigneau was born in Béhaine, Origny-en-Thierache (later Aisne, France) and was trained as a missionary in the Séminaire des Missions Étrangères.
Pigneau was born in Béhaine. Pigneau was trained as a missionary in the Séminaire des Missions Étrangères. Béhaine was Origny-en-Thierache (later Aisne). Later Aisne was France.