Page "History of Croatia" Paragraph 11

According to the work De Administrando Imperio written by the 10th-century Byzantine Emperor Constantine VII, the Croats had arrived in what is today Croatia in the early 7th century, however that claim is disputed and competing hypotheses date the event between the 6th and the 9th centuries.

Eventually two dukedoms were formed — Duchy of Pannonia and Duchy of Dalmatia, ruled by Ljudevit Posavski and Borna, as attested by chronicles of Einhard starting in the year 818.

The record represents the first document of Croatian realms, vassal states of Francia at the time.

The Frankish overlordship ended during the reign of Mislav two decades later.

According to the Constantine VII christianization of Croats began in the 7th century, but the claim is disputed and generally christianization is associated with the 9th century.

The first native Croatian ruler recognised by the Pope was duke Branimir, whom Pope John VIII referred to as Dux Croatorum (" Duke of Croats ") in 879.