Theobald David Oberzimmer was born in Bad Kissingen on April 4, 1891 as the son of the cattle dealer Maier Oberzimmer and his wife Fanny, née Berliner from Westheim. He entered Kissingen Realschule, the predecessor of contemporary Jack-Steinberger-Gymnasium, in September 1901 and got his leaving report on July 1908. Until 1922, he lived with his parents in Hemmerichstrasse 28. In October 1922, he moved to Stolp/ Eastern Prussia together with his brother Nathan.

There he established a business for growing and dealing with cattle together with his brother Nathan who had also apprenticed as a merchant and cattleman. There were wide plains for grazing and stables for the business. The brothers moved on the estate partly on horseback and partly in a car, as Martin Walter, a nephew of Nathan, described in his application for compensation to the “Entschädigungsamt in Berlin” (Berlin Office for Compensation). 

In 1935, the two brothers suffered a fatal blow. In a car crash, both of them were severely wounded. Nathan was treated in the hospital of Deutsch-Krone for two years and stayed an invalid. As anti-Semitic intimidations and boycott actions also became more and more serious in those years, the brothers gave up their business in Stolp and moved to Berlin in 1938. 

Theobald Oberzimmer died from brain tumor in a Berlin hospital in 1940 at the age of 49.

His brother Nathan was deported to Theresienstadt in 1942 and from there to Auschwitz/ Oświęcim Extermination Camp where he was murdered. 

Theobald’s sister Laura, however, succeeded in emigrating to the United States with her family but she took her own life there in October 1943.