Prior to his son and heir, Josef I's marriage to Wilhelmine Amalie of Brunswick, Leopold I, Holy Roman Emperor, attempted to arrange a series of marriages between the House of Habsburg and the House of Bourbon (and Savoy).
One of the marriages he proposed was that of Élisabeth Charlotte d'Orléans (full sister of the Régent, Philippe II, half sister of the Queen of Spain and the duchess of Savoy, daughter of Liselotte and Monsieur) to Josef. This marriage plan was scuppered for reasons which I can only imagine pertained to the inheritance of the dying Carlos II's empire.
But say it had worked. Or, any of the other matches* proposed had caused a Diplomatic Revolution in the 1700s. Élisabeth Charlotte was the mother of 14 children by her OTL husband, the duke of Lorraine - which caused her mother to remark 'my daughter was a prisoner of war'. So, the chances that she could give Josef a son seems very likely.
*The other matches proposed were:
Louis, duc de Bourgogne to Maria Elisabeth of Austria
Philippe (Felipe V), duc d'Anjou to Maria Magdalene of Austria
Josef, King of the Romans to Élisabeth Charlotte d'Orléans
Karl, Archduke of Austria to Maria Adelaide of Savoy
One of the marriages he proposed was that of Élisabeth Charlotte d'Orléans (full sister of the Régent, Philippe II, half sister of the Queen of Spain and the duchess of Savoy, daughter of Liselotte and Monsieur) to Josef. This marriage plan was scuppered for reasons which I can only imagine pertained to the inheritance of the dying Carlos II's empire.
But say it had worked. Or, any of the other matches* proposed had caused a Diplomatic Revolution in the 1700s. Élisabeth Charlotte was the mother of 14 children by her OTL husband, the duke of Lorraine - which caused her mother to remark 'my daughter was a prisoner of war'. So, the chances that she could give Josef a son seems very likely.
*The other matches proposed were:
Louis, duc de Bourgogne to Maria Elisabeth of Austria
Philippe (Felipe V), duc d'Anjou to Maria Magdalene of Austria
Josef, King of the Romans to Élisabeth Charlotte d'Orléans
Karl, Archduke of Austria to Maria Adelaide of Savoy