Klekl was born in Krajna, near Tišina from father András Klekl and mother Anna Lülik. András Klekl's brother was István Klekl, the father of József Klekl, who was Slovene politician and also Catholic priest. The grandfather of the Klekl brothers, Anton Klekl was German descent from the Prlekija.
In 1906-1919 was the editor of Prekmurian almanach Kalendar Srca Jezušovoga, in 1918-1919 editor of the newspaper Novine. In 1918 support the program of the autonomous Slovene March(Slovenska krajina) in Hungary or Slovenia. After the World War I support the use of the Prekmurian language. In his articles hard attacking the communism.
Near the St. Nicholas church in Dolenci have statue.