Halfdan Bjølgerud died in 1970.
Halfdan Schjøtt died in 1974.
Halfdan Cleve was born in 1879.
Halfdan Kjerulf was born on September 15, 1815.
Halfdan Rasmussen was born on January 29, 1915, in Denmark.
The cast of Pro forma - 1912 includes: Axel Boesen Anton Gambetta Salmson as Wilde Gunnar Helsengreen as Halfdan Strange Clara Pontoppidan as Evelyn Ebba Thomsen as Elsie Wilde
Halfdan Hansen died in 1953.
Halfdan Christensen died in 1950.
Halfdan Strøm died in 1949.
Halfdan Egedius died in 1899.
Halfdan Cleve died in 1951.
Halfdan Holth died in 1950.
Halfdan Lehmann died in 1908.
Halfdan Sundt died in 1951.
Halfdan Bryn died in 1933.
Halfdan Schjøtt died in 1974.
Halfdan Magnus Mustad died in 1967.
Halfdan Gran Olsen died in 1971.