Bretwalda
Dictionary of Historical Allusions · 1903 · p. 28
Under the Saxon Heptarchy, the sovereign of one of the seven kingdoms was often acknowledged as the leader of the Federation, under the title of Bretwalda.
Bu kavram başka kaynaklarda da geçiyor
Chamber's Twientieth Century Dictionary (1908)
The American Dictionary and Cyclopedia (1907)
Nuttall Encyclopedia (1907)
Chandler's Encyclopedia (1898)
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