He was born at Fjeld in Hordaland, Norway. He was a son of vicar Jens Kobro Daae (1811-1897) and his wife Nicoline Friis Daae (1820-1895). His mother was his father"s first cousin, as well as a sister of historian and politician Ludvig Kristensen Daa.
Daae finished his secondary education in Skien in 1869, and took the candidate.med. degree in 1878. He worked at Rikshospitalet from 1878 to 1879, Gaustad Asylum from 1879 to 1880 and at Eidsvold Bad in 1880. From 1880 to 1884 and 1885 to his death he worked in Chicago, Illinois.
In addition to being a physician, he worked as a correspondent for Aftenposten.
He headed several fundraisers when disasters, such as the Ålesund Fire, occurred in Norway or Sweden. In 1906 he also headed the Norwegian-American deputation to the coronation of King Haakon VII and Queen Maud of Norway.
He died in June 1924 in Chicago of diabetes mellitus.
He was a board member of the Norwegian Students" Society, and in 1876 and 1878 he chaired the students" society Medicinerforeningen. He was a member of the Chicago Medical Society and the Scandinavian Medical Society in Chicago.
