Saxe-Coburg-Saalfeld in the context of "Saxe-Gotha"

The House of Saxe-Coburg and Gotha (/ˌsæks ˈkoʊbərɡ ... ˈɡɒθə, - ˈɡɒtə/ SAKS KOH-bərg ... GOT(H)-ə; German: Haus Sachsen-Coburg und Gotha), known until 1826 as the House of Saxe-Coburg-Saalfeld (Haus Sachsen-Coburg-Saalfeld), is a European royal house of German origin. It takes its name from its oldest domain, the Ernestine duchy of Saxe-Coburg and Gotha, and its members later sat on the thrones of Belgium, Bulgaria, Portugal, and the United Kingdom and its dominions.

Founded in 1826 by Ernest Anton, the sixth duke of Saxe-Coburg-Saalfeld, it is a cadet branch of the Saxon House of Wettin. One agnatic branch currently reigns in Belgium—the descendants of Leopold I—and another reigned in the United Kingdom until the death of Elizabeth II—the descendants of Albert, Prince Consort.

Prince Albert of Saxe-Coburg and Gotha (Franz August Karl Albert Emanuel; 26 August 1819 – 14 December 1861) was the husband of Queen Victoria. As such, he was consort of the British monarch from their marriage on 10 February 1840 until his death in 1861. Victoria granted him the title Prince Consort in 1857.

Albert was born in the Saxon duchy of Saxe-Coburg-Saalfeld to a family connected to many of Europe's ruling monarchs. At the age of 20, he married Victoria, his first cousin, with whom he had nine children. Initially, he felt constrained by his role as consort, which did not afford him power or responsibilities. He gradually developed a reputation for supporting public causes, such as educational reform and the abolition of slavery worldwide, and he was entrusted with running the Queen's household, office and estates. He was heavily involved with the organisation of the Great Exhibition of 1851, which was a resounding success.

Francis, Duke of Saxe-Coburg-Saalfeld (German: Franz Friedrich Anton, Herzog von Sachsen-Coburg-Saalfeld, 15 July 1750 – 9 December 1806), was a reigning Duke of Saxe-Coburg-Saalfeld, one of the ruling Thuringian dukes of the House of Wettin. As progenitor of a line of Coburg princes who, in the 19th and 20th centuries, ascended the thrones of several European realms, he is a patrilineal ancestor of the royal houses of Belgium and Bulgaria (and also of Portugal until the death of King Manuel II in 1932 and the United Kingdom until the death of Queen Elizabeth II in 2022), as well as of several queens consort and the empress consort of Mexico in the 1860s.