 It reverted to Saint-Gengoux-le-Royal is 1834, Saint-Gengoux-le-National in 1848, Saint-Gengoux-le-Royal in 1852 before finally settling on Saint-Gengoux-le-National in 1881.The river Grosne forms part of the commune's south-eastern border.The church was built in 1120 by the Benedictines of Cluny.