Louise was born at the Hôtel de Soissons in Paris. The Hôtel was the birthplace of her mother, a granddaughter of Louis de Bourbon, an uncle of Henry IV of France. Her father was Prince Thomas Francis of Savoy, the younger son of the Duke of Savoy and his Spanish wife, Infanta Catherine Michelle of Spain.
She was the mother of Louis, Margrave of Baden-Baden, the famous chief commander of the Imperial army. 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 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 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. She died in Paris aged 61. She is also an ancestor of the ruling Juan Carlos I of Spain, Henri, Grand Duke of Luxembourg and Albert II of Belgium.
