Krogness was born in Trondhjem as a son of curate Ole Andreas Tangen Krogness (1832-1887) and Christiane Augusta Lindeman (1850-1928) [REF].
In June 1912 in Kristiania he married Dagny Vegerd Guldberg (1887-1978), and became a son-in-law of physician Carl Johan Guldberg [REF].