French fort at mouth St. John river, N.B. Built by Claude de la Tour 1631, on Portland Point, east side of St. John harbour. Attacked by Charnisay 1643 and again in 1645, and finally captured by Charnisay 1645 and the garrison massacred and fort destroyed. Charnisay then built Fort Charnisay on the opposite side of harbour. Fort Charnisay was also known as fort La Tour. The name was again changed to fort Martignon 1672 when Sieur Martignon obtained the grant of St. John. In 1700 it was named Fort St. Jean. About 1750 it was rebuilt by French and called fort Menagoueche. It was soon abandoned. In 1758 General Moncton rebuilt the fort and named it Fort Frederick and it was sometimes called Fort Moncton. In 1775 the fort was destroyed by the Americans. In 1778 Fort Howe was built on the hill above Portland Point. Finally abandoned 1821.

Fort La Tour is shown on D'Anville's map of 1755 (No. 97) also Vieux Fort & Establishments Français a few miles further upstream.