Halfdan Lehmann was born in 1825.
Halfdan Lehmann died in 1908.
Halfdan Hansen was born in 1883.
Halfdan Christensen was born in 1873.
Halfdan Strøm was born in 1863.
Halfdan Bjølgerud was born in 1884.
Halfdan Egedius was born in 1877.
Halfdan Holth was born in 1880.
Halfdan Hegtun was born in 1918.
Halfdan Sundt was born in 1873.
Halfdan Bryn was born in 1864.
Halfdan Schjøtt was born in 1893.
Halfdan Cleve was born in 1879.