House of Saxe-Coburg and Gotha (Joan of What?)

The House of Hamilton-Campbell-York-Lancaster is the Imperial house of the Empire of the United Cygnian States. It was first founded in 1473 as the House of Hamilton by Peter III of Great Britain and France, the first of the Hamilton monarchs of the United Kingdom. The House in its current form was established in 1831 following the accession of Theodore I to the throne of Cygnia, merging his family with that of his spouse, Alexandra York-Lancaster, to form the House of Hamilton-Campbell-York-Lancaster. The most prominent living member of the House of Hamilton-Campbell-York-Lancaster is its current head, Theodore V of Cygnia.