Henry I, Count of Hohnstein

Henry I (c. 1225–1284/93) was Count of Hohnstein, succeeding his father Dietrich I in 1249. In 1253 he took over Klettenberg, and over the following decades he built up a Thuringian lordship piecemeal: half of Kirchberg Castle and Ehrich in 1259, Greußen in 1260, and Spatenberg Castle, enfeoffed to him by Landgrave Albert in 1263.

Sömmerda followed in 1268. He married Mechthild of Regenstein before 1253, became senior of the house in 1280, and died on 24 January, between 1284 and 1293.