What is "saint-merri"

The Church of Saint-Merri ( French: Église Saint-Merri) is a parish church in Paris, located along the busy street Rue Saint Martin, on the Rive Droite (Right Bank). It is dedicated to the 8th-century abbot of Autun Abbey, Medericus, who came to Paris on pilgrimage and later died there in the year 700. In 884 Medericus, also known as "Merry", was acclaimed patron saint of the Right Bank.