The oldest antiquity may be the
menhir of Bayo. In 1643, as a reward for services rendered at the siege of
La Rochelle (1627-1628),
Louis XIV granted Sebastian de Ploeuc the right to hold four fairs a year and also a weekly market. In 1664, the de Ploeuc family sold its lands to the La Rivières, whose
coat of arms can still be seen on the
Moulien de la Corbière. The Count de La Rivière was the ancestor of
Lafayette, who sold his estates at Ploeuc to cover the expenses which fell on him as a result of the
American War of Independence. This war also caused great harm to the local
linen industry. Today, Plœuc-sur-Lié retains its rural character, with a prosperous agriculture which is largely from
potato growing. Apart from the Bayo menhir, there are many restored old houses,
windmills, and nearby
forests. ==See also==