Ernst Johann von Biron Monarch
Ernst Johann von Biron (German: Ernst Johann von Biron; Russian: Эрнст Иоганн Бирон; 23 November [O.S. 13 November] 1690 – 29 December [O.S. 18 December] 1772) was a Duke of Courland and Semigallia (1737) and regent of the Russian Empire (1740).
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Monarch
From | 1737 |
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To | 1772 |
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