Claim: Wallendorfer Porzellan was solely owned by the Hammann family from 1764 until the present time.
Evidence: Finally the Duke of Saxe-Coburg granted Hammann his porcelain manufacturing concession, and in 1764, together with Gotthelf Greiner and his cousin Gottfried Greiner, he founded the porcelain manufacturing company in Lichte (Wallendorf). Consequently the trademark Wallendorf porcelain, one of the oldest porcelain trademarks in Europe, was established. Until 1833 the company remained in the hands of Hammann's family.