The Theis name was first found in Germany in the 1600's The name was taken from the name Mathias or Matthew and is spelled many different ways. Some of the variations are Thein, Theus, Theitz and Theisman just to name a few. All variations of the spelling are welcome to our project. Several members of the Theis family rose to nobility in the 17th and 18th centuries and branched into Gouda, Prussia and Austria where they held titles and estates, according to houseofnames.com .