Career
Although he started in his hometown Bergen as a local businessman in 1884 having his own business in operation from 1892, Ludvig made his stage debut at Christiania Theater in 1897 where he stayed for two years before moving on to his thirteen years at the newly established Nationaltheatret in 1899. Müller chaired the Norwegian Actors" Equity Association from 1901 to 1903, and from 1907 to 1913. From 1913 to 1916 he was theatre director at Trøndelag Teater in Trondheim, a city much farther north.
He died at the german spa town Bad Nauheim in 1922, after having finished a manuscript for Den nye lensmannen, a silent movie released in 1926, four years after his death.
Ludvig married for the second time in 1912 to singer Margit Lunde (1881–1976) who accompanied Ludvig while touring the nordic countries and also performed at Centralteatret 1907-1914. In 1917 Margit Lunde-Müller had a role in the silent movie Fjeldpigen and in the swedish movie En stille flirt from 1934.