Ernst Jacob Renz (Born 1815 in Böckingen bei Heilbronn, dead 1892 in Berlin) started Circus Olympic in 1842 with his wife and Gotthold Schumann (1805-1898).
1892: His oldest son Franz Renz (1846 -1901) took over the circus after Ernst death in 1892.
1897: Franz renz dissolved the company in 1897.
1899: Albert Schumann took over the rests of the circus and rename it Circus Schumann.
Ernst nephew Robert Renz died also in 1897, but his wife Thérese Renz (1859 -1938) toured as Circus Renz with her son Hugo Renz, until he died in heart problems. After some time one of the two elephants died.
Thérese Renz sold the last elephant to Circus Knie.