Troarn () is a commune in the Calvados in the Normandy region in northwestern France. On 1 January 2017, it was merged into the new commune Saline, but this merger was undone on 31 December 2019. Population Sights The abbey founded by Roger de Montgomery in 1059 See also Communes of the Calvados department References Communes of Calvados (department) Calvados communes articles needing translation from French Wikipedia