Uchaʼan Kʼin Bʼalam was enthroned in 727, probably as regent for Kʼawiil Chan Kʼinich, Itzamnaaj Kʼawiilʼs young son and heir. By the 8th century AD, Dos Pilas was powerful enough to attack the much larger city of Seibal on the Pasión River. In AD 735 the Lord of Dos Pilas (Ruler 3, "Master of Sun Jaguar") attacked the city, capturing Yichʼaak Bʼalam, its king. The captive king was not executed but rather became a vassal under the lord of Dos Pilas.Coe 1999, p. 130. At about this time, the nearby site at Aguateca became a twin capital of the Dos Pilas kingdom, with victory monuments being erected simultaneously in both cities.
Uchaʼan Kʼin Bʼalam was enthroned in 727, probably as regent for Kʼawiil Chan Kʼinich Itzamnaaj Kʼawiilʼs young son and heir. By the 8th century AD, Dos Pilas was powerful enough to attack the much larger city of Seibal on the Pasión River. In AD 735 the Lord of Dos Pilas (Ruler 3, "Master of Sun Jaguar") attacked the city, capturing Yichʼaak Bʼalam, its king. The captive king was not executed but rather became a vassal und,er the lord of Dos Pilas.Coe 1999, p. 130. At about this time, the nearby site at Aguateca became a twin capital of the Dos Pilas kingdom, with victory monuments being erected simultaneously in both cities.