Prince Henry XXX of Reuss
Quite surprising that his mother was a mere baroness!
He was lord of Neuhof (today Radociny) in Lower Silesia and Jänkendorf (Němske Jenkecy in Sorbian) in Upper Lusatia. In both villages there were residences. Neuhof was wholly German-speaking before WW2, but I wonder if Feo and Heinrich's subjects in Jänkendorf may have spoken Sorbian, considering the village has a Sorbian name, even though the name, meaning German Jenkecy, seems like an exonym.