Principality of Anhalt-Zeitz-Hoym
Principality of Anhalt-Bernburg-Schaumburg-Hoym
The Principality of Anhalt-Zeitz-Hoym was formed in 1707 as subordinate to Anhalt-Bernburg. Amt Hoym was the only Anhalt territory that was part of it. Haus Zeitz and Belleben (which formed Amt Zeitz, which had been under Bernburg administration since 1684) were also part of it, but they remained under Saxon and Prussian sovereignty respectively.
In 1727, the first prince of Anhalt-Hoym died and his son, who already held sovereignty over the County of Holzappel-Schaumburg on the lower Lahn River, inherited the Ämter of Zeitz and Hoym. He renamed his collective lands as the Principality of Anhalt-Bernburg-Schaumburg-Hoym, but I treat it as a personal union between Anhalt-Hoym, Holzappel-Schaumburg, Zeitz, and Belleben (with the last three having a -Hoym appended to the end of their simplified country names to acknowledge the personal union).
In 1806, when the Holy Roman Empire was abolished, Holzappel-Schaumburg was assigned to the Duchy of Nassau, a Napoleonic client state that became independent in 1815 under the Treaty of Vienna. Amt Zeitz was incorporated into another Napoleonic client state, the Kingdom of Westphalia, then was awarded to Prussia in 1815 (although Bernburg ownership was confirmed in 1823). The Hoym line died out in 1812 and Amt Hoym reverted to Anhalt-Bernburg.
Master list of countries and subdivisions in the Anhalt region
Master list of countries and subdivisions in the Mansfeld region
Master list of countries and subdivisions in the Magdeburg region
Master list of countries and subdivisions in the Ottonian-Nassau region