Konrad III Rudy | |
|---|---|
| Duke of Masovia | |
 | |
| Born | 1447/48 |
| Died | 28 October 1503 (aged 56-57) Osieck |
| Buried | St. John's Archcathedral, Warsaw |
| Noble family | House of Piast |
| Spouse(s) | Magdalena Stawrot m. 1468/70 - wid. 1476/77 N, daughter of Alexius m. 1477 - wid. (or div.) 1493 Anna Radziwiłł m. 1496/97 - his death |
| Issue | Sophia of Masovia Anna of Masovia Stanisław of Masovia Janusz III of Masovia |
| Father | Bolesław IV of Warsaw |
| Mother | Barbara Olelkovna |
Konrad III Rudy, also known in English as Konrad the Red (1447/48 – 28 October 1503), was a Polish prince and member of the Piast dynasty in the Masovian branch. He was a duke of Czersk, Liw, Warsaw, Nur, Łomża, Ciechanów, Różan, Zakroczym and Wyszogród during 1454-1471 jointly with his brothers (under regency until 1462), Duke of Płock, Wizna, Płońsk and Zawkrze during 1462-1471, and after the division of the paternal domains in 1471, sole ruler over Czersk and Liw, over Wyszogród during 1474-1489 and again in 1495, over Zakroczym since 1484, over Nur since 1488 and over Warsaw since 1489.
He was the third son of Bolesław IV of Warsaw and Barbara Olelkovna, a daughter of Kievan duke Olelko Volodymyrovych). The premature death of his two older brothers during 1453-1454 left him as the eldest surviving son of his family.