I went to his profile but found it difficult to make any headway, given what little info currently exists. So I went down a level to the profile of his son Otto and basically dumped all the sources that I could find onto it. Trying to give us all a broader foundation from which to spring backwards, hopefully.
What more can you tell about Oskar T? Where does the info about his second name or that he was born 10 May 1852 in Thum (im Erzgebirge) originate? Same question for his wife Johanne Richter -- what's the origin of her second name Wilhelmine and her birth month/year?