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Ferdinand I of Bulgaria
Tsar of Bulgaria
Years: 1861 - 1948
Ferdinand (26 February 1861 – 10 September 1948), born Ferdinand Maximilian Karl Leopold Maria of Saxe-Coburg and Gotha-Koháry, is the ruler of Bulgaria from 1887 to 1918, first as knyaz (prince regnant, 1887–1908) and later as tsar (1908–1918).
He is also an author, botanist, entomologist and philatelist.
