Ruler Y was a Maya king of Calakmul. He is also known as Ruler 8 and Bolon K'awiil I. He reigned around the year 736.
His monuments are stelae 25, 26, 27, 59 and 60.
It is possible that this king ordered in AD 741 the erection of five imposing stelae at Calakmul, but damage to the glyphs precludes reading of the commissioning ruler's name,Historical Dictionary of Mesoamerica by Walter R. T. Witschey, Clifford T. Brown and it is possible that they are actually commissions of Wamaw Kʼawiil (possible father of Ruler Y).Martin and Grube 2008:114
It was around this very time that Tikal consolidated its victories over Calakmul by Jasaw Chan Kʼawiil (695) and Yikʼin Chan Kʼawiil (c. 736); the latter’s triumphs over El Peru in 743 and Naranjo in 744 effectively spelled the end of hegemony of Calakmul.Chronicle of the Maya Kings and Queens by Simon Martin and Nikolai Grube 2008:44, 48-49, 114)
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