Hrvat .

http://hr.wikipedia.org/wiki/Hrvatsko_Kraljevstvo

http://en.wikipedia.org/wiki/Kingdom_of_Croatia_(medieval)

The book De Administrando Imperio, written in the 10th century, is the most referenced source on the migration of Slavic peoples into southeastern Europe. It states that they migrated first around or before year 600[2] from the region that is now (roughly) Galicia and areas of the Pannonian plain, led by the Avars, to the province of Dalmatia ruled by the Roman Empire. De Administrando Imperio on pg.143 reports a folk tradition that the Croats were led into the province of Dalmatia by a group of five brothers, Klukas, Lobel, Kosenc, Muhlo and Hrvat, and their two sisters, Tuga and Buga.[2]