Who married Archduke Rainer Ferdinand of Austria?

Archduke Rainer Ferdinand Maria Johann Evangelist Franz Ignaz of Austria (11 January 1827 – 27 January 1913) was an Austrian prince and politician who served as Minister-President of Austria from 1861 to 1865. Later in his life, he took up the collection of preserved papyri, largely from Egypt, and served as a benefactor and patron while working with the Oriental studies department of the University of Vienna. His purchases of papyri from Egypt formed the Rainer collection at the Austrian National Library.

Archduchess Maria Karoline of Austria (Maria Karoline Luise Christine, Erzherzogin von Österreich; 10 September 1825 – 17 July 1915) was an Archduchess of Austria.