World and to serve the seasonal fishing industry. Its geographic position permitted Louisbourg to serve, not only as capital of Île-Royale, but as first line of defence in the 18th century during the wars with Great Britain for the supremacy of North America. New England colonial troops aided by the British Royal Marines captured the city in 1745 after six weeks of siege. After three years of British governance, Louisbourg was returned to France in the Treaty of Aix-la-Chapelle. The Minister of Marine appointed Charles des Herbiers de La Ralière as governor in 1748, and Jean-Louis de Raymond in 1751, who was replaced in 1754 by Augustin de Boschenry de Drucour. Peace was short lived, and on 26 July 1758, after the second Siege of Louisbourg, the French Governor Augustin de Drucourt gave the keys of the city to the British and Edward Boscawen after James Wolfe led one of the greatest assaults in the history of colonial Canada. After that, 4,000 Acadian inhabitants were deported. However, a group of ten families from Port Toulouse fled to Isle Madame where their descendants still live today. Governors Philippe Pastour de Costebelle (1714-1717) Joseph de Monbeton de Brouillan, dit Saint-Ovide (1717-1739) Isaac-Louis de Forant (1739-1740) Jean-Baptiste Prévost du Quesnel (1740-1744) Louis Du Pont Duchambon de Vergor (1744-1745) Antoine Le Moyne de Châteauguay (1745) British occupation: Charles Knowles (1745-1747) Peregrine Thomas Hopson (1747-1748) Charles des Herbiers de La Ralière (1748-1751) Jean-Louis de Raymond (1751-1753) Augustin de Boschenry de Drucour (1754-1758) References Acadian history New France Acadia 1713 establishments in New France 1763 disestablishments in New France