Claim: After the death of Neumann, Götz, a German-Polish brewer, the founder of the Okocim Brewery and father of Jan Albin Goetz (also known as Jan Albin Goetz-Okocimski) and the grandfather of Antoni Jan Goetz (Antoni Jan Goetz-Okocimski), became the sole owner of the brewery and modernized the enterprise and expanded it, adding a malthouse in 1875.
Evidence: Okocim Brewery /əˈkɒtʃɪm/ (Polish pronunciation: [ɔˈkɔt͡ɕim), in Brzesko in southeastern Poland, is a brewery founded in 1845. After the death of Neumann, Götz became the sole owner of the brewery. After the death of Johann Evangelist Götz in 1893, the brewery was taken over by his son, Jan Albin Goetz. The brewery was established in 1845 by Johann Evangelist Götz (1815-1893), a German beer maker born in Wirtemberg together with Joseph Neumann, from Austria-Hungary, and local Polish noble, Julian Kodrębski. Jan Albin further expanded the family business, married a Polish aristocrat, and changed his name to Goetz-Okocimski. In the 1930s, in newly independent Poland, the brewery was run by Jan Albin's son, Antoni Jan Goetz, who took over in 1931. He modernized the enterprise and expanded it, adding a malthouse in 1875. 
Johann Evangelist Götz (Polish: Jan Ewangelista Goetz; born 16 November 1815, Langenenslingen, County of Hohenzollern-Sigmaringen – died 14 March 1893, Brzesko, Poland) was a German-Polish brewer, the founder of the Okocim Brewery and father of Jan Albin Goetz (also known as Jan Albin Goetz-Okocimski) and the grandfather of Antoni Jan Goetz (Antoni Jan Goetz-Okocimski).