There were three Bragança marriages into the House of Thurn und Taxis:
Maria Teresa de Bragança (1881-1945) x Karl Ludwig Prinz von Thurn und Taxis (1863-1942)
Great-aunt and great-uncle (in law) of Johannes, XI. Fürst von Thurn und Taxis and Mariae Gloria Gräfin von Schönburg-Glauchau
Isabel Maria de Bragança (1894-1970) x Franz Joseph, IX. Fürst von Thurn und Taxis (1893-1971)
Aunt and uncle (in law) of Johannes, XI. Fürst von Thurn und Taxis and Mariae Gloria Gräfin von Schönburg-Glauchau
Maria Ana de Bragança (1899-1971) x Karl August, X. Fürst von Thurn und Taxis (1898-1982)
Parents (in law) of Johannes, XI. Fürst von Thurn und Taxis and Mariae Gloria Gräfin von Schönburg-Glauchau.