Thimerais

Thymerais
Natural region
Thymerais landscape in the winter near Senonches
A map of the Eure-et-Loir showing the group of Thymerais communes in red
Country	France

Thymerais (or Thimerais) is a natural region of Eure-et-Loir, in France, where history and geography meet. Open to influences from Normandy, Drouais, Beauce and Perche, it is a transition zone like the Drouais.

A former country of Perche under the Merovingian dynasty, it took its name from its allegiance to Theodemer, prince of the Merovingian family.

Thymerais is also associated with the barony of Châteauneuf-en-Thymerais whose territory included in the thirteenth century the north-west of the Eure-et-Loir and some villages in Drouais, Eure and Orne, and overflowed the present townships of Courville-sur-Eure and La Loupe.

The name Thymerais was taken in 2003 to designate the district of Thymerais municipalities made of communes belonging to the canton of Châteauneuf-en-Thymerais. Châteauneuf-en-Thymerais and Thimert-Gâtelles are the historic centers of this district.

Open to influences from the Île-de-France, the Pays chartrain (Chartres region), Normandy and Perche, Thymerais consists of plateaus and valleys cleared in the Middle ages, forests and ponds. It is a transition zone bounded roughly in the north by the River Avre, which separates the department of Eure, in the south and east by the river Eure, and in the west by the Orne department.