Frederic ("Fritz") Wolff-Knize (26 July 1890 – October 1949) was a German businessman, owner of Kniže & Comp.
Knize married Annie (née Rothmüller), who was born on 10 October 1905, and died in November 1979 in New Canaan, Connecticut.
[4][5][6] Following his death in 1949, his substantial collection was broken up and sold, partly at the Kende Galleries in New York.
[10][11] It was placed under provisional administration; in 1941 his property in Vienna was removed and sold via the Nazi VUGESTA looting organization.
[2][15] As of 2021, there were 19 paintings and nine other artworks from the collection of Annie and Frederic Knize listed in the German Lost Art Foundation database.