Dulo clan
The "Nominalia of the Bulgarian khans" ("Imennik") contains traces of two damaged records between the entries for Tervel and Sevar, and the second of these lost names is generally taken to be that of Kormesiy. According to the "Imennik", Kormesiy would have reigned for 28 years and was a descendant of the royal Dulo clan. According to the chronology developed by Moskov, Kormesiy would have reigned 715–721, and the longer period reflected in the "Imennik" would have indicated the duration of his life or would have included a period of association with his predecessors. Other chronologies date the reign of Kormesiy to 721–738 but cannot be reconciled with the data of the "Imennik".