Prussian rulers?

Can anyone give me a list of the head of state (ruler) of Prussia and their reign starting from 1250 until present (Germany)? It would be greatly appreciated. =]
Prussian rulers?
%26#039;Prussia%26#039; was not created until 1701.





From that time onward, here is a list: http://www.infoplease.com/ipa/A0107569.h...





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Before 1701, its a little vague who %26#039;ruled%26#039; the Prussian area, who were part of the Baltic tribes. This Wiki site can give you a little more information but you will have to do more research to find exact rulers.





http://en.wikipedia.org/wiki/Prussians





%26quot;Because the Baltic tribes inhabiting Prussia never formed a common political and territorial organisation, they had no reason to adopt a common ethnic or national name. Instead they used the name of the region from which they came 鈥?Galindians, Sambians, Bartians, Nadrovians, Natangians, Scalovians, Sudovians, etc. It is not known when and how the first general names came into being. This lack of unity weakened them severely, similar to the condition of Germany during the Middle Ages.%26quot;





Perhaps a look at the Teutonic Order might give you more insight.