The Catholic branch did have a sizable city palais in Vienna, which eventually wa sold.
The Catholic branch came out of the wedding of Duke Alexander of Württemberg (himself the son of Duke Alexander and his wife the former Princess Antoinette of Saxe-Saalfeld-Coburg , a sister of King Leopold I of the Belgians) and Princess Marie d'Orléans (daughter of King Louis-Philippe of the French and his wife the former Princess Marie-Amelie of Bourbon-Two Sicilies).
Duke Philipp, Alexander and Marie's one surviving child, married a Habsburg, as did his son and grandson. Three generations of Wuurttembergers married into the imperial house.
Arturo Beéche