John I of Mecklenburg (1211-1264)
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![English](/Images/flags/small/gb.png)
John I Mecklenburg
![English](/Images/flags/small/gb.png)
John I of Mecklenburg
![English](/Images/flags/small/gb.png)
John I the Theologian
![English](/Images/flags/small/gb.png)
John I Theologian
![International format](/Images/flags/small/un.png)
Johann I der Theologe
![International format](/Images/flags/small/un.png)
Johann I Mecklenburg
![International format](/Images/flags/small/un.png)
Johann I Theologe
![International format](/Images/flags/small/un.png)
Johann I von Mecklenburg
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