Page "Morganatic marriage" Paragraph 11

Although the children, or issue, of morganatic marriages were ineligible to succeed to their families ' respective thrones, some children of morganatic marriages did go on to achieve dynastic success elsewhere in Europe.

The 1851 marriage of Prince Alexander of Hesse and by Rhine and German-Polish noblewoman Countess Julia von Hauke ( created Princess of Battenberg ), provided a sovereign prince of Bulgaria, and queen-consorts for Spain and Sweden, as well as ( through female descent ) the consort of the current Queen of the United Kingdom.

The present Spanish Royal Family and members of the British Royal Family, including the current Prince of Wales, trace descent from her.

Likewise, the marriage of Duke Alexander of Württemberg and Claudine Rhédey von Kis-Rhéde ( created " Countess of Hohenstein ") resulted in the House of Teck.

That family's most famous member, Mary of Teck, married George V of the United Kingdom, and the present British Royal Family descends from her.