Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Birth | Marriage | Became Consort | Ceased to be Consort | Spouse |
| --- | --- | --- | --- | --- | --- |
| Amalia of Oldenburg | 21 December 1818 | 22 November 1836 | 23 October 1862 husband's desposition | 26 July 1867 husband's death | Otto |
| Gisela of Austria | 12 July 1856 | 20 April 1873 | 12 December 1912 husband's accession | 28 September 1930 husband's death | Prince Leopold of Bavaria |
| Bona Margherita of Savoy | 1 August 1896 | 8 January 1921 | 31 May 1943 husband's accession | 6 September 1969 husband's death | Prince Konrad of Bavaria |
| Helene von Khevenhüller-Metsch | 4 April 1921 | 16 November 1970 | 16 November 1970 | 1 January 1997 husband's death | Prince Eugen of Bavaria |
| Disputed | Disputed | Disputed | Disputed | Disputed | Disputed |
Question:
Who had a disputed marriage?
Answer:
Disputed