the county of Montmagny, Île-aux-Grues and adjoining Islands, except such part of the said county of Montmagny included in the municipalities of Berthier and Saint-François-de-la-Rivière-du-Sud;
the county of L'Islet, except such part thereof as is included in the municipalities of Ashford, Sainte-Louise, Saint-Roch-des-Aulnaies, Saint-Perpétue and Tourville.
In 1947, it was redefined to consist of:
the county of Montmagny (except the municipalities of Berthier and Saint-François-de-la-Rivière-du-Sud), and the town of Montmagny and the municipality of L'Île-aux-Grues;
the county of L'Islet except the municipalities of Ashford, Sainte-Louise, Saint-Roch-des-Aulnaies, Sainte-Perpétue, Tourville and the territory included in the parish of Sainte-Félicité.
In 1952, it was redefined to consist of:
the county of Montmagny (except the parish municipalities of Berthier and Saint-François-de-la-Rivière-du-Sud), the town of Montmagny and the parish municipality of Saint-Antoine L'Ile-aux-Grues;
the county of L'Islet (except the township municipality of Ashford, the parish municipality of Sainte-Louise, the municipalities of Saint-Roch-des-Aulnaies, Tourville and Sainte-Félicité) and that part of the parish municipality of Sainte-Perpétue included in lots 13 to 56 of Range VIII, Lafontaine Township.
It was abolished in 1966 when it was redistributed between Bellechasse and Kamouraska.
