Greble was born in
Riga, Latvia, son of Johann Greble and his wife Auguste (
nee Zalcmane). He studied at the
University of Latvia in Engineering, Mathematics and Agriculture, with an interval of compulsory military service in the Latvian Army heavy artillery in 1925–26. He became a journalist, first editor of the sports journal
Sporta pasule in 1931–34. In 1934 he was briefly detained as a member of the board of the banned fascist
Perkonkrusts (Thunder Cross) movement following the coup of
Karlis Ulmanis. Following the
Soviet annexation of Latvia in 1940, Greble was arrested by the Soviet authorities and after being deemed "socially dangerous" was deported into Russia in October 1941 after being sentenced to imprisonment in the
Gulag. He died in
Vyatlag prison camp, Russia in March 1943. ==References==