| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | List of rulers of Lorraine - House of Lorraine |  |  |  |  |
| 3 | Portrait | Name | Start term | End term | Note |
| 4 | - | René II | 24 July 1473 | 10 December 1508 | grandson of René I and Isabella; also Duke of Bar |
| 5 | - | Antoine | 10 December 1508 | 14 June 1544 | - |
| 6 | - | Francis I | 14 June 1544 | 12 June 1545 | - |
| 7 | - | Charles III | 12 June 1545 | 14 May 1608 | - |
| 8 | - | Henry II | 14 May 1608 | 31 July 1624 | - |
| 9 | - | Nicole | 31 July 1624 | 25 November 1625 | she was the daughter of Henry II; the estates of Lorraine eventually decided that she was not eligible to reign, and gave the crown to her uncle, Francis II; her husband and first cousin, Charles IV, would reign thereafter |
| 10 | - | Francis II | 25 November 1625 | 1 December 1625 | he immediately abdicated in favour of his son, Charles IV; died 1632 |
| 11 | - | Charles IV | 1 December 1625 | 19 January 1634 | abdicated in favour of his brother |
| 12 | - | Nicholas II | 19 January 1634 | 1 April 1634 | fled into exile and abdicated in favour of his older brother; the duchy remained under effective French control for the next 27 years |
| 13 | - | Charles IV | 1 April 1634 | 18 September 1675 | nominally restored as a result of his brother's abdication; Lorraine was occupied by France, and the Duke in exile, from 1634 to 1661 and again from 1670 until his death |
| 14 | - | Charles V Leopold | 18 September 1675 | 18 April 1690 | He was in exile and Lorraine was occupied by France throughout his nominal reign |
| 15 | - | Leopold | 18 April 1690 | 27 March 1729 | He was in exile and Lorraine was occupied by France until 30 October 1697, when it was returned to Léopold Joseph; it was again occupied by France from 1702 to 1714, although the duke remained in place |
| 16 | - | Francis III Stephen | 27 March 1729 | 9 July 1737 | traded Lorraine in exchange for the Grand Duchy of Tuscany; elected Holy Roman Emperor in 1745; died 1765, husband of Empress Maria Theresa |

Question: How long was Charles IV the Duke of Lorraine and were there any interruptions during his term?
Answer: Charles IV was Duke of Lorraine until his death in 1675, with an interruption in 1634, when he abdicated in favor of his brother, Nicholas.