He appears to have retired from public life shortly after the death of Richelieu in 1643.
Her early years were clouded by the execution of the duc de Montmorency, her mother's only brother, for intriguing against Richelieu in 1631, and that of her mother's cousin the comte de Montmorency-Boutteville for duelling in 1635; but her parents made their peace with Richelieu, and being introduced into society in 1635 she soon became one of the stars of the Hotel Rambouillet, at that time the centre of all that was learned, witty and gay in France.
The first important industry of the state was "rafting" lumber from Vermont through Lake Champlain and the Richelieu and St Lawrence rivers to Quebec. Burlington became a great lumber market for a trade moving in the direction of Boston after the Richelieu river was blocked to navigation and railway transportation began, and in 1882 Burlington was the third lumber centre in the United States.
Water communication is afforded by Lake Champlain to the south, for seven months of the year, by way of the Champlain canal, via Whitehall, New York, to Troy and the Hudson river and the Atlantic coast, and to the north by way of the Richelieu river and the Chambly canal to the St Lawrence.
Louise became maid of honour to Anne of Austria, and Richelieu sought to attract the attention of Louis XIII.
