Max's marriage certificate gives his date of birth as 03.10.1867 and places both bride and groom in Beuthen.

The 1880 Beuthen address book does not list any Borinskis. However, the 1914 Upper Silesia business directory lists a Max Borinski as a leather merchant in Beuthen. The 1927 Beuthen address book lists only one Max Borisnki: a businessman at Hohenzollernstrasse 2 who appears under the heading of "Leather and leather goods" (part V, page 16).

The 1937 Beuthen address book lists two people by the name of Max Borinski: a retired person at Virshowstrasse 1 whose address identifies him as Ernst Borinski's father, and a businessman at Hohenzollernstrasse 3. The latter is presumably the leather trader listed at Hohenzollernstrasse 2 in previous years although neither Borinski nor the Hohenzollernstrasse address is listed under "Leather and leather goods" in the 1937 directory, suggesting that he may have retired by then.



A notice in the Juedisches Gemeindeblatt fuer Oberschlesien announced the 70th birthday, on 01.10.1937, of Max Borinski, Hohenzollernstr 3. He was therefore born on 01.10.1867 according to the person who placed the announcement, which is only two days adrift from the date on the marriage certificate.