Saint-Gonlay is a commune in the department of Ille-et-Vilaine in Brittany in the northwest of France.GeographyThe Meu river goes through the town. There are 280 inhabitants in Saint-Gonlay and the territory stretches over 926 hectares. In the North, there is the Meu river and the Comper river, in the East is the brook of Boutavent and in the South, the forest of Brocéliande. The town is part of the county of Montfort-sur-Meu and depends of Rennes. It is surrounded by Montfort-sur-Meu, Bédée, La Nouaye, Breteil, Pleumeleuc, Talensac, Iffendic.Rivers: The Comper The Meu Brooks: The Hélouin The Boutavent The Planchette Mountaintop: The Châtel (91 meters) The Lorinou (83 meters)PopulationInhabitants of Saint-Gonlay are called gonlaysiens in French.HistoryThe parish of Iffendic separated in two and the town of Saint-Gonlay was founded. Its birth is probably due to the building of a church in the 13th century by two priests of Montfort-sur-Meu. A priory has also been built and it depends on Saint-Jacques de Montfort abbey.