Question: Who reigned over Duchy of Saxe-Coburg and Gotha from 1844 to his death, and was married to Princess Alexandrine of Badin?
Sentence (from "Ernest II, Duke of Saxe-Coburg and Gotha"): Ernest's father became Duke of Saxe-Coburg and Gotha in 1826 through an exchange of territories.
Relevant evidence: No