Napoelon met the widowed mother Marie Josephe Rose Tascher of La Pagerie in September 1795, who was six years older and was instantly injured.
They married in March 1796, making her Empress Josephine, the first Empress of France.
Jean-Christophe's great-uncle is Napoleon I, who married the archduchess Maria-Louise of Austria to secure an ally of the country in fighting Britain and the Russians.
Their relationship was stormy, and in 1810 he divorced after she failed to produce heirs, in favor of Marie Louise, 18, the daughter of Emperor Francis I of Austria.
Archduchess Marie Louise was not happy with her union with a man 22 years older than she had ever met.
Her great-aunt Marie Antoinette had also been executed while she was queen of France and feared for her own destiny.
However, she had to bow to her father's will, and the couple married by proxy in a religious ceremony on March 11, 1810, in which Napoleon did not attend.
Marie Louise had grown up against a backdrop of continuing conflict between Austria and revolutionary France, and her home country had suffered a series of heavy defeats.
In 1809, a year before their marriage, Austria and Britain were involved in the Fifth Coalition War against France and Bavaria, which ended in favor of the French at the Battle of Wagram in July.
The resulting Schönbrunn Treaty led Austria to lose more than three million individuals after ceding territory to France and Bavaria.
However, the marriage of Napoleon and Marie Louise in 1810 signaled a temporary peace between Austria and the French Empire.
Despite her initial apprehensions, Marie-Louise seemed to like Napoleon after marriage and became an obedient wife.
Napoleon, however, compared the shy, shy girl to his ex-wife Josephine, who was passionate and outgoing. The pair remained in close contact, which upset Marie-Louise.
She gave birth to a son in 1811, Napoleon François Joseph Charles Bonaparte, and was a devoted mother.
In 1813 Prussia and the United Kingdom joined Russia in the declaration of war on France, but Austria remained neutral due to the connection between imperial families.
When Napoleon left for battle in Germany, Marie-Louise was appointed regent, and although she tried to persuade her father to ally with France, Austria soon joined the opposition.
In January 1814 Marie-Louise saw Napoleon go into battle for the last time as he tried to prevent the Allied invasion of the north of the country.
Three months later, at Talleryrand's instigation, the Senate announced the deposition of the Emperor and Napoleon abdicated.
While he was exiled to Elba, Marie-Louise retained his imperial position and title, becoming ruler of the duchies of Parma, Piacenza and Guastalla, with his son as heir.
She was dissuaded from contacting her husband, who would have been disturbed by the death of his ex-wife, Josephine.
When Napoleon escaped in 1815 and reestablished his rule, Marie-Louise was invited by her stepmother to pray for the success of the Austrian armies, but rejected it.
Later that year, when he was defeated at the Battle of Waterloo and exiled to St. Helena, he did not attempt to contact his wife.
Napoleon died on May 5, 1821, having suffered a difficult life in exile, and Marie-Louise married Count Adam Albert von Neipperg on August 8, with whom he had three children.
She fell ill on December 9, 1846, with her condition rapidly worsening and died on December 17.