Vatt was born on 7 November 1843 in
Rødby on
Lolland, the son of medical doctor Julius Theodor Emil Vett (1808–1869) and Karen Petrine Bjørn (1813–1881). At the age of 14, he became an apprentice in C. B. Christensen's textile shop in
Aarhus. He worked in the shop for a total of nine years and ended up heading it for around a year after the owner had fallen ill. After C. B. Christensen's death, Vett worked briefly in Emil Secher's fashion shop. ==Career==