This article is about the daughter of Thomas Francis, Prince of Carignano. For the regent of Francis I, King of France, see Louise of Savoy. For the Franciscan nun, see Louise of Savoy (nun).
She married Margrave Ferdinand Maximilian of Baden-Baden (1625–1669) on 15 March 1653 at the Église Saint-Sulpice, Paris, France. The church was near the Hôtel de Soissons. The marriage contract was signed on the same day and is today preserved in the Parisian Institut de France. This marriage was negotiated by none other than the famous Cardinal Mazarin and the Ambassador of the Margrave of Baden-Baden one Monsieur Krebs. Her husband was the Hereditary Prince of Baden-Baden, this meant that he was the Heir apparent of his father Wilhelm, Margrave of Baden-Baden.
Marriages between German and Savoyard nobles were common in an era when many Savoyard nobles lived in German states notably Baden itself, due to official charges in the country.
The marriage was not successful. Louise Christine of Savoy refused to leave the refined French court and follow her husband to Baden-Baden. Louise Christine gave birth to a son on April 8, 1655 named Louis William of Baden-Baden. He was named after the French King Louis XIV, who was his godfather.
Ferdinand Maximilian then abducted his son from Paris and brought him to Baden-Baden. Ferdinand ordered a Savoyard man named Charles Maurice de Lassolaye, who had access to the Hôtel de Soissons, to smuggle his three-month-old son out of Paris and take him to be raised in Baden-Baden. As a consequence Louis William was not raised by his mother, but by his grandfather's second wife Maria Magdalena of Oettingen-Baldern.
When it was clear that Louise Christine would not leave Paris, some said due to the influence of her mother, Louise Christine and her husband decided to separate and let her son be raised in Baden-Baden.