On 15 October 1884 at Schloss Fischorn, Maria Antonia married Robert I, Duke of Parma as his second wife. She bore him twelve children. Maria Antonia was widowed when Robert died at Villa Pianore on 16 November 1907. Later on she resided with her daughter Zita while in exile. By 1940, Zita and her family, Maria Antonia and her daughter Isabella were living in reduced circumstances in Quebec. Eventually, after the War's end, Maria Antonia moved to Berg Castle, Luxembourg where she celebrated her 90th birthday. After lingering for many years, she died there in 1959 aged 96. She was the last surviving grandchild of John VI of Portugal. Many of her children and grandchildren have also lived very long lives.
Issue
Princess Maria della Neve Adelaide ; she was a Benedictine nun and her religious name of Mother Maria Benedicta of the Benedictine Order of the Sisters of St. Cecile.
Sixtus of Bourbon-Parma ; he married Hedwige de La Rochefoucauld on 12 November 1919. They have one daughter, five grandsons, six great-grandchildren and one great-great-granddaughter.
Zita of Bourbon-Parma ; she married Charles I of Austria on 21 October 1911. They have eight children, thirty-three grandchildren, one hundred and ten great-grandchildren and thirty-one great-great-grandchildren.
Prince Felix of Bourbon-Parma ; he married Charlotte of Luxembourg on 6 November 1919. They have six children, twenty-seven grandchildren, seventy-eight great-grandchildren and twenty-seven great-great-grandchildren.
Prince René of Bourbon-Parma ; he married Princess Margrethe of Denmark on 9 June 1921. They have four children, seventeen grandchildren, twenty-seven great-grandchildren and twelve great-great-grandchildren.
Princess Henrietta Anna of Bourbon-Parma ; she was profoundly deaf.
Prince Gaetano of Bourbon-Parma ; he married Princess Margherita della Torre e Tasso on 29 April 1931 and they were divorced on 24 January 1950. They have one daughter, three grandchildren and two great-grandsons:
*Princess Diane Marguerite of Bourbon-Parma ; she married Prince Franz Joseph of Hohenzollern-Sigmaringen on 15 March 1955 and they were divorced on 19 January 1961. She remarried Hans Joachim Oehmichen on 21 March 1961. Victim of COVID-19. They have three children and two grandsons:
**Alexander Oehmichen ; he married Jutta Raiss in 1998. They have one son:
***Philip Oehmichen
**Gaetano Oehmichen ; he married Julika Reich in 1995
