Ringaudas

The Livonian Rhymed Chronicle, a contemporary source, just mentions that he was a powerful duke, but does not provide his name.

[1] Ringaudas, son of otherwise unknown Algimantas,[1] is first mentioned in the second redaction of the Lithuanian Chronicle written c. 1515 and has no historical basis.

[2] In the chronicle Ringaudas returned to Navahrudak after a victorious battle with the Mongols on the bank of the Neman River at Mohilna near Minsk.

[4] Maciej Stryjkowski, asserts that Ringold's father, Algimunt, ruled in Navagradak over all Rus' and Lithuania, starting from Vilija River up to Starodub, Chernigov, Turau and Karachev, as well as all of Podlasie with its adjacent castles, Brest, Mielnik, Drohiczyn, etc., holding them in peaceful tenure.

Algimunt hurriedly died after his father, Trojnat, leaving all lands, including Rus' territories, to his son, Ringold, with common consent of all estates.