Thus down to nearly the middle of the twelfth century, Bosnia continued to own allegiance to her Serbian suzerains, and the claims of the Croats to Bosnia continued to be little more than nominal till their own country fell into hands more capable of enforcing them. But at the beginning of the twelfth century the Magyars overthrew the kingdom of the Croats, and in 1141 Geiza II. of Hungary completed the conquest of Bosnia, or, as it is generally known in the Hungarian annals, of Rama, from the little river of that name, flowing into the Narenta.[9] Still, the Hungarian dominion does not seem as yet to have been much more than a vague suzerainty. Bosnia, indeed, throughout the whole of this period, seems to have stood aloof from all its neighbours. It might own a nominal allegiance, now to Serbia, now to Croatia, now to Hungary, but it enjoyed a practical independence. Its general isolation from the main current of Serbian history may be gathered from the chronicler of Dioclea; and when Manuel Comnenus reduced Hungary to a temporary subjection, his historian Cinnamus was struck with the same phenomenon. ‘The Drina,’ says he, ‘divides Bosthna from the rest of Serbia. For Bosthna is not subject to the Grand-Župan of Serbia, but the people were at that time under their own magistrates, and used their own customs.’ The recent Russian historian of the Serbs and Bulgarians[10] traces many of the later misfortunes of Bosnia to this fatal estrangement from the other Sclavonic lands. The Hungarian alliance now makes this alienation irrevocable. Cinnamus shows the close relations existing between Bosnia and Hungary at the date of Manuel’s invasion when he goes on to say that ‘Boritzes,[11] Exarch of Bosthna,’ aided the King of Hungary against the Greeks; and, indeed, we know from other sources that the Bosnian Ban was himself an illegitimate son of the Magyar king, Coloman. Manuel reduced Bosnia, with Croatia and other parts of Hungary, for a while; but the Ban was not long in recovering the province. The Hungarian connection was only cemented the more firmly, and on Borić’s death, in 1168, his son, the new Ban Culin, accepted his investiture from Bela III., and subscribed himself henceforth _Fiduciarius Regni Hungariæ_.