He was the father of painter and museum director Pietro Krohn.

[1] He studied sculpture at the Royal Danish Academy of Fine Arts from 1823 and trained as a medal engraver under the guidance of H.E.

His first wife was Sophie Susanne Købke (3 May 1807 - 15 July 1853), a daughter of master baker at Kastellet Peter Berendt Købke and Cecilia Margrethe Petersen.

Krohn was second time married to Emilie Købke (17 July 1812 – 1 January 1880) a daughter of kancelliråd Caspar Berendt Købke and Juliane Dorothea Ratz, on 31 July 1855 in Vester Åby Church on Funen.

Krohn died on 13 September 1883 at Copenhagen Municipal Hospital.