The Duke of Saxe-Coburg and Gotha was a title held by members of the German nobility, specifically from the duchy located in present-day Germany. The title became prominent in the 19th century, particularly through the lineage of Prince Albert, who was married to Queen Victoria of the United Kingdom. This connection helped establish a network of royal ties across Europe. The duchy itself was formed in 1826 when the territories of Saxe-Coburg and Saxe-Gotha were united. The title was held by various dukes until the end of the German monarchy after World War I, leading to the dissolution of the duchy and the title's eventual obsolescence.