Thérouanne

a river in Seine-et-Marne department; Thérouanne (a commune of Seine-et-Marne department, France)

First attested as Ancient Greek Ταρουάννα (Tarouánna) c. 170. From Old French Teruanne, from Latin Tervanna, from Gaulish *Taruanna, which comes from taruos (“bull”).