Eugenie Louise Adelaide, princess of Orleans, daughter of Louis Philippe Joseph, duke of Orleans, surnamed Egalite, born in Paris, Aug. 25, 1777, died there, Dec. 31, 1847. In 1791 she went to England. On her return, in November, 1792, she found herself proscribed as an emigree, and lied into the Austrian Netherlands, then invaded by the French army of the north, putting herself under the protection of her brother, the young duke of Chartres, afterward King Louis Philippe, who commanded a division of that army. Her brother being soon compelled to take flight himself to escape the guillotine, she was conducted over to the Austrian advanced posts. She rejoined her brother after many perils in Schaff hausen, Switzerland, May 26, 1793, accompanied by her former governess, Mme, de Genlis. They next took refuge in a convent, but their money ran short, and she threw herself upon the protection of her aunt, the princess Conti, at Fribourg. Her aunt dared not receive her in her own house, as the prejudice against the name of Orleans was so strong among the royal family of France, but she put her and Mme. de Genlis to board in a Swiss convent.

After a separation of 10 years she saw her brother once more at Figueras in Spain; and after some further removals she at length rejoined him at Portsmouth, England, whence she followed him to Palermo, where in 1809 he married the daughter of the king of the Two Sicilies. From that time till the restoration she lived with him in Sicily. When Louis XVIII. had to quit Franco once more, she again followed her brother abroad. After the revolution of July, 1830, she persuaded him to accept the throne. Madame Adelaide, as she was now called, exercised considerable influence on the decisions of the king of the French, and was popularly regarded as his guardian angel. She died two months before his overthrow in February, 1848.