Johannes Voldemar Üksi (December 14, 1891 – August 10, 1937) was an Estonian writer and actor. Early life. Johannes Üksi was born in Riidaku, the son of Mart Üksi (1861–1908) and Emilie Elisabeth Üksi (née Treu; 1863–?). Career. From 1913 to 1918, Üksi worked as a messenger boy and an actor. During the First World War, he was the commander of Toompea Castle in 1918. The German occupation authorities sentenced him to death for hiding weapons, but the sentence was commuted to forced labor. As a writer, Üksi's main work is a collection of visionary prose pieces that fluctuates between delirium and spiritualism, "Kummalised novellid. I" (Strange Short Stories I; 1923). His memoir "Surma!" (Death!; 1918) contains biographical material. Üksi died of esophageal cancer in Tallinn in 1937. He was buried in Iru.