Wilhelm Heinrich, Duke of Saxe-Eisenach
| Wilhelm Heinrich | |
|---|---|
 | |
| Duke of Saxe-Eisenach | |
| Reign | 1729–1741 |
| Predecessor | Johann Wilhelm |
| Successor | Ernst August I |
| Born |
10 November 1691 Oranjewoud |
| Died |
26 July 1741 (aged 49) Eisenach |
| Spouse |
Albertine Juliane of Nassau-Idstein Anna Sophie Charlotte of Brandenburg-Schwedt |
| House | House of Wettin |
| Father | Johann Wilhelm, Duke of Saxe-Eisenach |
| Mother | Amalie of Nassau-Dietz |
| Religion | Lutheranism |
Wilhelm Heinrich, Duke of Saxe-Eisenach (Oranjewoud, 10 November 1691 – Eisenach, 26 July 1741), was a duke of Saxe-Eisenach.
He was the eldest and only surviving son of Johann Wilhelm, Duke of Saxe-Eisenach and his first wife Amalie of Nassau-Dietz.
Wilhelm Heinrich first married Albertine Juliane of Nassau-Idstein (daughter George August, Count of Nassau-Idstein) in Idstein on 15 February 1713. This marriage was childless. He married his second wife Anna Sophie Charlotte of Brandenburg-Schwedt in Berlin on 3 June 1723, just eight months after the death of Albertine Juliane. The second marriage was also childless.
Wilhelm Heinrich acceded to the duchy of Saxe-Eisenach in 1729 upon the death of his father and was succeeded by his second cousin, duke Ernst August I of Saxe-Weimar. The personal union between Eisenach and Weimar created by this succession was only nominal until 1809, when the two patrimonies were formally united.
| Preceded by Johann Wilhelm |
Duke of Saxe-Eisenach 1729–1741 |
Succeeded by Ernst August I |