Radu I of Wallachia

Radu I (died 1383 or 1385) was a Voivode of Wallachia (c. 1377 – c. 1383/1385). His year of birth is unattested in primary sources. He was the son of Nicolae Alexandru and half-brother and successor to Vladislav I. He is identified by historians as the name origin of the legendary Radu Negru, a mythical voievode of the early medieval state Wallachia, founder of the state's institutions and ruler.