Question: When were the revolutions that Joanneum was named after this member of the House of Habsburg-Lorraine?

Context paragraphs:
Princess Theresa of Bavaria (b. 1931): Archduchess Theresa of Austria, German: "Theresa Monika Valerie Elisabeth Ludovika Walburga Anna, Erzherzogin von Österreich" (born 9 January 1931 at Schloss Wallsee in Amstetten, Lower Austria, Federal State of Austria) is a member of the Tuscan branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth.  Through her marriage to Prince Rasso of Bavaria, Theresa is also a member of the House of Wittelsbach and a Princess of Bavaria.

Sophie, Princess of Windisch-Graetz: Sophie, Princess of Windisch-Graetz (born Sophie Franziska Maria Germaine of Habsburg-Lorraine, Archduchess of Austria, 19 January 1959) is a member by birth of the House of Habsburg-Lorraine, and by marriage of the Austrian House of Windisch-Graetz.

Joanneum: Joanneum so named after Habsburg Archduke Johann of Austria may refer to:

Maria Ludovika of Austria-Este: Maria Ludovika of Austria-Este, also known as Maria Ludovika of Modena, (German: "Maria Ludovika Beatrix von Modena" ; 14 December 1787 – 7 April 1816) was the daughter of Archduke Ferdinand of Austria-Este (1754–1806) and his wife, Maria Beatrice Ricciarda d'Este (1750–1829).  She was a member of the House of Austria-Este, a branch of the House of Habsburg-Lorraine.

Archduchess Maria Henrietta of Austria: Archduchess Maria Henrietta, full German name: "Maria Henrietta Caroline Gabriele, Erzherzogin von Österreich" (10 January 1883, Preßburg, Austria–Hungary – 2 September 1956, Mariazell, Austria) was a member of the Teschen branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth.  Through her marriage to Prince Gottfried Maximilian of Hohenlohe-Schillingsfürst, Maria Henrietta became a member of the house of Hohenlohe-Waldenburg-Schillingsfürst.

Archduchess Rosa of Austria: Archduchess "Rosa" Maria Antonie Roberta Josepha Anna Walburga Carmela Ignazia Rita de Cascia of Austria, full German name: "Rosa Maria Antonie Roberta Josepha Anna Walburga Carmela Ignazia Rita de Cascia, Erzherzogin von Österreich" (22 September 1906, Parsch, Salzburg, Salzburg, Austria–Hungary – 17 September 1983, Friedrichshafen, Baden-Württemberg, Germany) was a member of the Tuscan branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth.  Through her marriage to Philipp Albrecht, Duke of Württemberg, Rosa was also a member of the House of Württemberg and Duchess consort of Württemberg.

Archduke John of Austria: Archduke John of Austria (German: "Erzherzog Johann Baptist Joseph Fabian Sebastian von Österreich" ; 20 January 1782 – 11 May 1859), a member of the House of Habsburg-Lorraine, was an Austrian field marshal and Imperial regent ("Reichsverweser") of the short-lived German Empire during the Revolutions of 1848.

Archduke Rainer of Austria (1895–1930): Archduke Rainer of Austria German: "Rainer, Erzherzog von Österreich-Toskana" ; (21 November 1895 – 25 May 1930) was a member of the House of Habsburg-Lorraine, a member of the Tuscan branch of the Imperial House of Habsburg, an Archduke of Austria and Prince of Tuscany by birth.  He was the eldest son Archduke Leopold Salvator of Austria, Prince of Tuscany.  He served as officer in the Austrian army during World War I.  At the fall of the Habsburg dynasty, he remained in Vienna and worked for a time as taxi driver.  He died unmarried at the age of 34 from blood-poisoning.

Archduchess Maria Anna of Austria (1882–1940): Archduchess "Maria Anna" Isabelle Epiphanie Eugenie Gabriele of Austria, full German name: "Maria Anna Isabelle Epiphanie Eugenie Gabriele, Erzherzogin von Österreich" (6 January 1882, Linz, Upper Austria, Austria–Hungary – 25 February 1940, Lausanne, Vaud, Switzerland) was a member of the Teschen branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth.  Through her marriage to Prince Elias of Bourbon-Parma (later Duke of Parma), Maria Anna was also a member of the House of Bourbon-Parma and a Princess of Bourbon-Parma.

Archduchess Helena of Austria: Archduchess Helena of Austria, full German name: "Helena Marie Alice Christine Josefa Anna Margareta Madeleine Walburga Blandina Cäcilie Philomena Carmela Ignatia Rita de Cascia, Erzherzogin von Österreich, Prinzessin von Toskana" (30 October 1903, Linz, Upper Austria, Austria–Hungary – 8 September 1924, Tübingen, Baden-Württemberg, Germany) was a member of the Tuscan branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth.  Through her marriage to Philipp Albrecht, Hereditary Duke of Württemberg, Helena was also a member of the House of Württemberg and Hereditary Duchess consort of Württemberg.

Supporting paragraphs: Joanneum Archduke John of Austria
Answer: 1848