The story
In 1874, the Rieker company was founded as the first shoe factory in Tuttlingen by Heinrich Rieker and Carl Seitz under the name Rieker & Seitz. In 1901 Seitz left the company. Heinrich Rieker died in 1905. His three sons Ernst, Heinrich and Karl Rieker then took over the management of the company, and the company name was changed to Rieker & Co. in 1907.
From Wikipedia’s article on Rieker Shoes, shared under CC BY-SA 4.0.4