Alfred , Duke of Saxe-Coburg and Gotha ( Alfred Ernest Albert ; 6 August 1844 â `` 30 July 1900 ) was the third Duke of Saxe-Coburg and Gotha reigning between 1893 and 1900 . Alfred , Duke of Saxe-Coburg and Gotha ( Alfred Ernest Albert ; 6 August 1844 â `` 30 July 1900 ) was the third Duke of Saxe-Coburg and Gotha , and reigned from 1893 to 1900 .