Ferdinand II (Portuguese: Fernando II) (29 October 1816 – 15 December 1885) was a German prince of the House of Saxe-Coburg and Gotha-Koháry, and King of Portugal jure uxoris as the husband of Queen Maria II, from the birth of their son in 1837 to her death in 1853. In keeping with Portuguese law, only after the birth of his son in 1837 did he acquire the title of king. Ferdinand's reign came to an end with the death of his wife in 1853, but he served as regent for his son and successor, King Pedro V, until 1855. He and Maria founded the House of Braganza-Saxe-Coburg and Gotha, which would rule Portugal until 1910. Born Ferdinand August Franz Anton in Vienna, he was the eldest son of Prince Ferdinand of Saxe-Coburg-Saalfeld and his wife Princess Maria Antonia Koháry de Csábrág, heiress to the House of Koháry. The younger Ferdinand grew up in several places: the family estates in modern-day Slovakia, the imperial court of Austria, and Germany. He was a nephew of King Leopold I of Belgium, and thus a first cousin to Leopold II of Belgium and Empress Carlota of Mexico, as well as Queen Victoria of the United Kingdom and her husband Prince Albert. In 1826, his title changed from Prince of Saxe-Coburg-Saalfeld to Prince of Saxe-Coburg and Gotha, following the re-arrangement of the Saxon duchies. According to Portuguese law, the husband of a queen regnant could only be titled king after the birth of an heir from that marriage; this was the reason Maria II's first husband, Auguste de Beauharnais, Duke of Leuchtenberg, never acquired the title of king. After the birth of their eldest son and heir, the future Pedro V of Portugal, Ferdinand was proclaimed King Dom Fernando II. Although it was Maria who reigned by right, the royal couple formed an effective team during their joint reign, with Ferdinand reigning by himself during his wife's pregnancies. Eventually, Maria II died as a result of the birth of their eleventh child, and Ferdinand II's reign ended. However, he would assume the regency of Portugal from 1853 to 1855, during the minority of his son King Pedro V.

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