His first play, the tragedy Catilina (1850), was published under the pseudonym "Brynjolf Bjarme", when he was only 22, but it was not performed.
Dramanya yang pertama, tragedi Catilina (1850), diterbitkan dengan pseudonym Brynjolf Bjarme, ketika usianya baru 22 tahun, namun drama itu tidak dipertunjukkan.