Dreyer was born illegitimate in Copenhagen, Denmark. His birth mother was an unmarried, Scanian maid named Josefine Bernhardine Nilsson, and he was put up for adoption by his birth father, Jens Christian T… See more

As a young man, Dreyer worked as a journalist, and he eventually joined the film industry as a writer of title cards for silent films and subsequently of screenplays. He was initially hired by Nordisk Film in 1913.
His first att… See more

• Good Mothers (Mødrehjælpen, 12 min, 1942)
• Water from the Land (Vandet på landet, 1946)
• The Struggle Against Cancer (Kampen mod kræften, 15 min, 1947)… See more