The importance of emblem glyphs to Maya studies has long been recognized. Among these are emblems that have yet to be conclusively matched to archaeological sites. The Water Scroll emblem glyph is one such example, although it appears numerous times in the Classic Maya written corpus between the sixth and the eighth centuries. These many references are found at a variety of sites across the lowlands, attesting to the importance of this ancient kingdom and the kings who carried this title. In the present paper, we review the epigraphic and archaeological evidence and propose that this may be the royal title of the kings who reigned from Altun Ha, in the east central Maya lowlands, in what is now Belize. In so doing, we also begin to reconstruct the dynastic history of the Water Scroll kings, from the vantage of both local and foreign sources.