Complex sentence: This would be the last grand event to held in Aranjuez, as Maria Christina of Austria the monarch's second wife, his son Alfonso XIII and his wife Victoria Eugenie of Battenberg all preferred the La Granja de San Ildefonso for their royal vacations.
Split into simpler sentences: This would be the last grand event to held in Aranjuez. Both Maria Christina of Austria the monarch's second wife, his son Alfonso XIII and his wife Victoria Eugenie of Battenberg all preferred the La Granja de San Ildefonso for their royal vacations.