Hermann Karl Hayek

https://encyklopedie.brna.cz/home-mmb/?acc=profil_osobnosti&load=17232

As a brewing entrepreneur, together with his relative Josef Mandl, he created a public trading company for the operation of the brewery in Old Brno No. 158 (now Pivovarská No. 1 and 2) and in 1873 he applied for the registration of Mandl et Hayek in the Commercial Register for companies,
in 1888 they sold the company to Erste Brünner Actien Brauerei und Malzfabrik in Brněnské Ivanovice (now part of Brno) and then requested the deletion of the company from the Commercial Register

In 1882, he and his sons converted from the Jewish to the Catholic faith. His wife also transferred, in Komárov (now part of Brno).