Question: When was Dorothea Marie Of Saxe-Gotha-Altenburg's husband born?
Sentence (from "Frederick IV, Duke of Saxe-Gotha-Altenburg"): Ernst I of Saxe-Coburg-Saalfeld received Gotha, and changed his title to "Duke of Saxe-Coburg and Gotha", although the two duchies remained technically separate in a personal union.
Relevant evidence: No