Bertrand VI (c. 1417 - 26 September 1497) was lord of La Tour and count of Auvergne from 1461until his death. He was also count of Boulogne from 1461 to 1477, when he exchanged that title for the county of Lauragais, which he held for the remainder of his life.
In 1473, Bertrand built the franciscan church of Vic-le-Comte.[2]
In 1477, Charles the Bold died. This allowed Louis XI to reconquer the county of Boulogne, which had been occupied by burgundian forces. Louis then handed it back to Bertrand.[2] However, during the same year, Bertrand II dealed with Louis XI, exchanging the county of Boulogne with the county of Lauragais. Boulogne, so became part of the royal domain.[2][3][4]