sentences:  The conflict over the headship stems from the fact that the last undisputed head of the house Maria Emanuel, Margrave of Meissen, and the other princes of his generation either had no children or, in the case of Prince Timo, had children (including Prince Rüdiger of Saxony) who were not recognised by Margrave Maria Emanuel as dynastic members of the Royal House of Saxony.The first designated dynastic heir of Maria Emanuel was his and Albert's nephew Prince Johannes of Saxe-Coburg and Gotha, only son of their youngest sister Princess Mathilde of Saxony by her marriage to Prince Johannes Heinrich of Saxe-Coburg and Gotha, dynast of a ducal branch of the House of Wettin senior patrilineally to the royal branch.In 2014 the Deutscher Adelsrechtsausschuss (basically a deciding body of the associations of the German nobility with regard to questions of historical nobility law) issued an expert opinion that the Albertine line of the House of Wettin became extinct with the death of 
  Maria Emanuel, Margrave of Meissen in 2012.