With his brother Uuago, he donated property in the village of Wanga to the monastery by charter dated 23 October 805.
By then he had been put in charge of Dalmatia, where he was the local ruler at the time when an embassy from Constantinople passed through on their way to the court of Louis the Pious (816).
Einhard calls him Cadolaum comitem et marcæ Foroiuliensis præfectum ("Cadolah, count and prefect of the Friulian march") in 818.
Historians often identified Cadolah with Kotzil mentioned in De Administrando Imperio's account, "The Croats, unable to endure such treatment from the Franks, revolted from them, and slew those of them whom they had for archontes.
Because of this, a large army from Francia marched against them, and after they had fought one another for seven years, at last, and with hardship, the Croats managed to prevail and killed all the Franks and their archon, called Kotzil".