Ludwig went to Wiener Neustadt to study at the Theresian Military Academy, where he successfully graduated in 1892. After that, he was promoted to the rank of Lieutenant of the Fourth Tiroler Jäger-Regiment of the Austro-Hungarian Army in Lienz. On May 1, 1896, Ludwig was given the rank of First lieutenant, and, on March 29, 1900, he was given leadership of the First Tiroler Jäger-Regiment in Innsbruck. On May 1, 1903, he advanced to the rank of Captain.
Antonius Maria Ludwig Klemens Eugen Karl Heinrich August Luitpold Leopold Franz Wolfgang Peter Gaston Alexander Alfons Ignatius Aloysius Stanislaus (Innsbruck, 17 June 1901 – Haar, 1 September 1970), married on 14 May 1938 to Luise Mayrhofer. This marriage was childless.
Maria Immaculata Leopoldine Franziska Theresia Ildefonsa Adelgunde Klementine Hildegard Anna Josepha Elisabeth Sancta-Angelica Nicoletta (Innsbruck, 10 September 1904 – Varese, Italy, 18 March 1940). She died unmarried.
On February 8, 1907, Gaston left the army, and in Bischofteinitz, on November 30, 1907, Gaston married the Countess Anna of Trauttmansdorff-Weinsberg (1873 – 1948). They had one daughter:
Josefine Maria Anna Leopoldine Amalie Klementine Ludovica Theresia Gabriela Gonzaga (Schloß Vogelsang, 20 September 1911 – Stockdorf, 27 November 1997), married on 12 May 1937 to Richard, Freiherr von Baratta-Dragono (1901 – 1998); they had two children and divorced in 1945.