Career
His pen name can be read as Carolina da Mon in Swedish. In the 1920s and 30s, he wrote many of the most appreciated Swedish revues. 1956–1978, the revues he wrote for Folkan (Folk-theater) in Stockholm (among them the Kar de Mumma revue) became an institution on the Swedish theatre scene.
He was one of the most appreciated Swedish humor columnists, writing for Svenska Dagbladet from 1922 until the mid-1990s.
Foreign thirty years he would publish an annual book with lighthearted columns, memories and thoughts in the fall.