no one knows the answer to this question he is considered as Tsar Boris or King Boris lll so mabye you can find the answer to this and improve this answer one day:)
Bulgaria's name comes from the Bulgars, a semi-nomadic Turkic people who settled in the region in the 7th century. The name is derived from the Bulgar language, which means "mixed."
King Boris III's birth name is Boris Klemens Robert Maria Pius Ludwig Stanislaus Xaver von Saxe-Coburg-und-Gotha.
King John's full name was John Lackland.
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what is king james 1 full name
King Duncan's full name is Duncan I of Scotland.
His full name is Dr. Martin Luther King Jr.
what is king james 1 full name
what is king james 1 full name
Boris Tumarin's birth name is Boris Tumarinson.
Boris Sarbek's birth name is Boris Saberkoff.