Boris III was a King of Bulgaria who reigned from 1918 to 1943. He was the only son of King Ferdinand I and Queen Marie of Romania. Boris III died at the age of 49 on 28 August 1943 in Sofia, Bulgaria. His death is often attributed to poisoning by the Soviets, but there is no definitive evidence to support this claim.
The Enigmatic Reign: Boris III of Bulgaria - Unravel the Secrets Behind a Fascinating Tsar!