- Croatia (fallen in 1089, or 1095 if I'm correct)
Croatia was still an independent kingdom in 1080, ruled by king Dmitar Zvonimir.
The last Croatian king was Petar Svačić (Svacic)... He died in the battle of Mount Gvozd in 1097...
Hungarian king Coloman became the king of Croatia in 1102.
More information about Croatian history
His predecessor, Stjepan II (1089-1091) died without leaving an heir, sparking a major political crisis. The crisis was compounded when it was revealed that Jelena or Ilona, the widow of King Dmitar Zvonimir (1074-1089), was plotting the annexation of Croatia by her brother, King Ladislaus I of Hungary. The opportunistic Ladislaus used his sister's marriage to king Zvonimir as justification for his inheritance of the Croatian Crown.
Meanwhile, Croatia's leading dignitaries and clergy elected nobleman Petar as King, who immediately deployed the military to defend Croatia's borders from Hungarian attack. However it was too late. Ladislaus, who had probably devised a military strategy two years earlier, launched an offensive and managed to breach Croatian lines along the Drava River. The well-prepared Hungarians soon occupied the entire province of Slavonia but were halted by the Croats at Mount Gvozd (nears today's Karlovac).
Shortly after his army's success, Ladislaus died (1095), leaving his nephew Coloman to continue the campaign. King Petar's troops maintained their resistance repelling Hungarian assaults for nearly two years. Coloman grew frustrated at his army's impotence and in 1097 assembled an enormous force at the eastern foot of Mount Gvozd. The subsequent offensive was brutal and absolute, resulting in Petar's death. His heroism was commemorated in the renaming of Mount Gvozd to Petrova Gora (Peter's Mountain).
Five years of negotiations between Croatia's remaining noblemen and Coloman followed thereafter. Finally, in 1102, an historic settlement was reached (Pacta Conventa) by which the Croats agreed to recognise Coloman as king. In return, he promised to maintain Croatia as a separate kingdom, not to settle Croatia with Hungarians, to guarantee Croatia's self-governance under a ban (royal governor), and to respect all the rights, laws and privileges of the Croatian Kingdom.
Also I could help you with some models if you want... That's the least I can do for my country :D
Edit :
Some maps
(http://img18.picoodle.com/img/img18/3/1/21/f_61100ADm_d276a27.jpg)
(http://img19.picoodle.com/img/img19/3/1/20/f_51000euroatm_2a16e83.jpg)
Edit 2:
Some pictures...
Croatian horsemen - they should be Croatian elite troops
I also have an old coloring book which might help you a lot... I'm going to scan it for you tomorrow
(http://img257.imageshack.us/img257/3224/0017ct7.jpg)
(http://img171.imageshack.us/img171/9878/0011ru9.jpg)