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:
| Birth | Marriage | Became Duchess | Ceased to be Duchess | Death | Spouse |
| --- | --- | --- | --- | --- | --- |
| 11 December 1455 | 4 June 1474 | 21 July 1495 Created Duchess | 24 February 1496 husband's death | 30 May 1503 | Eberhard I |
| 29 October 1451 | April/May 1467 | 24 February 1496 husband's accession | 11 June 1498 husband's death | 28 March 1524 | Eberhard II |
| 24 April 1492 | 2 March 1511 | 2 March 1511 | January 1519 husband's desposition | 30 August 1564 | Ulrich |
| Württemberg annexed by Austria 1519–1534. | Württemberg annexed by Austria 1519–1534. | Württemberg annexed by Austria 1519–1534. | Württemberg annexed by Austria 1519–1534. | Württemberg annexed by Austria 1519–1534. | Württemberg annexed by Austria 1519–1534. |
| 24 April 1492 | 2 March 1511 | May 1534 husband's restoration | 6 November 1550 husband's death | 30 August 1564 | Ulrich |
| 28 December 1526 | 24 February 1544 | 6 November 1550 husband's accession | 28 December 1568 husband's death | 20 May 1589 | Christoph |
| 20 June 1559 | 7 November 1575 | 7 November 1575 | 19 May 1583 | 19 May 1583 | Louis III |
| 24 February 1572 | 10 May 1585 | 10 May 1585 | 18 August 1593 husband's death | 15 February 1635 | Louis III |
| 28 September 1564 | 22 May 1581 | 18 August 1593 husband's accession | 29 January 1608 husband's death | 26 October 1614 | Frederick I |
| 16 November 1584 | 5 November 1609 | 5 November 1609 | 18 July 1628 husband's death | 13 February 1636 | John Frederick |
| 27 January 1614 | 26 February 1637 | 26 February 1637 | 27 June 1655 | 27 June 1655 | Eberhard III |
| 29 December 1639 | 20 July 1656 | 20 July 1656 | 2 July 1674 husband's death | 29 June 1698 | Eberhard III |
| 28 April 1652 | 6 November 1673 | 2 July 1674 husband's accession | 23 June 1677 husband's death | 11 August 1712 | William Louis |
| 3 October 1680 | 6/16 May 1697 | 6/16 May 1697 | 31 October 1733 husband's death | 2 July 1757 | Eberhard Louis |
| 11 August 1706 | 1 May 1727 | 31 October 1733 husband's accession | 12 March 1737 husband's death | 1 February 1756 | Charles Alexander |
| 30 August 1732 | 26 September 1748 | 26 September 1748 | 6 April 1780 | 6 April 1780 | Charles Eugene |
| 18 December 1736 | 2 November 1753 | 20 May 1795 husband's accession | 23 December 1797 husband's death | 9 March 1798 | Frederick II Eugene |
| 29 September 1766 | 18 May 1797 | 23 December 1797 husband's accession | 25 February 1803 elevated from Electress | 5 October 1828 | Frederick III |
Question:
What is the Spouse of the Duchess that has a Death on 6 april 1780?
Answer:
Charles Eugene