Saint-Valentin formed a seigneury that extended to both parishes of Saint-Aoustrille and Saint-Valentin.
That lorship belonged to the patrimony of Lords of Issoudun until the 13th or 14^th century where its destiny was linked to that of Issoudun Hotel-Dieu.

In 1208, Raoul the 3^rd, lord of Issoudun, gave many of his lands to Hotel-Dieu which was about to take almost two centuries to possess the whole of seigneury

A Few years later, at the time of the repurchase of Issoudun by Philippe Auguste, seigneury of Saint-Valentin went back to the royal lands.
Then the king gave this land in fief to De La Chapelle’s family.
One of the progeny, Knight Jean De La Chapelle, sold what he owned from the lorship.

According to the archives, as far back as the 13th century, the men of seigneury, becoming "men of Liberty Hall", then ploughed lands and planted plentiful vineyards.

In the 15^th century, they cultivated cereals (wheat, barley, rye, oat) and they bred sheeps. The first day of September, the Hotel-Dieu took its tithe.