Gustav Adolf Lammers Heiberg

Gustav Adolf Lammers Heiberg (22 April 1875 – 1948) was a Norwegian barrister and politician for the Labour Party.

Personal life He was born in Kristiania as a son of barrister Anton Vilhelm Heiberg (1831–1885) and his wife Antonie Magdalene Fossum. He was a first cousin of Eivind, Jacob, Gunnar and Inge Heiberg and a first cousin once removed of Hans Heiberg. His sister Engel was married to physician Edvard Heiberg Hansteen.

Gustav Heiberg married twice. His first marriage, to Signe Konow, lasted from April 1904 to her death in April 1920. In 1921 he married Etty Roll, from Molde, a daughter of Ferdinand Nicolai Roll They settled in Vestre Aker.

Career Heiberg enrolled as a student in 1894 and graduated with the cand.jur. degree in 1897. He chaired Norwegian Students' Society from 1901 to 1902. After some years as a junior employee in a lawyer's office, he opened his own lawyer's office in Kristiania in 1902.

Heiberg was a member of the Labour Party since 1898, and served as a member of the executive committee of the municipal council of Kristiania from 1911 to 1919. Here, he was especially preoccupied with improving housing conditions in the city. He stood for parliamentary election in 1912, but was not elected. When the radical wing assumed control of the party at the 1918 national convention, he became tired from the ensuing disagreements in his party, and left politics to pursue his professional career.

During the German occupation of Norway, Heiberg was incarcerated at Grini as a "hostage", from 14 April 1942 to 22 October 1942.

Heiberg was also a founder of Folketeaterbevegelsen in 1929, together with Sverre Iversen, Fernanda Nissen and Kyrre Grepp, whose goal was to draw "broad masses of laborers and functionaries" into the theatre audience, as well as to establish a people's theatre. Folketeatret was finally established in 1952. Heiberg did not live to see this as he died in 1948.