Ondrej Sobola (*August 7, 1880 Lalinok, Austro-Hungarian Empire – † December 31, 1918 official date) was a soldier of Austro-Hungarian Army (German: Landstreitkräfte Österreich-Ungarns; Hungarian: Császári és Királyi Hadsereg). His death, in an unknown place during the First World War, inspired the Tree of Peace project. Ondrej was born in Lalinok into a farming family and the Sobola family have lived in Lalinok since the beginning of the 16th century. Ondrej Sobola was married to Jozefína Rapšíková in July 31, 1900 in Dlhé Pole and was taken into the army in 1901. Ondrej and his older brother Štefan travelled to the United States in around 1906 and their place of residence was the borough Clifton Heights in Delaware County, Pennsylvania. Ondrej returned to Lalinok between 1907 – 1910 and went back to the United States on November 30, 1910. Because of his stay in Pennsylvania he did not take part in the military manoeuvres in 1912. He definitely returned to Lalinok before 1914 and after the outbreak of the First World War he was enlisted in the 15th Military Infantry Regiment (Hungarian: 15. Népfelkelő gyalogezred ütközetei). Ondrej Sobola was missing from about 1915 on the Russian battlefield. In Czechoslovakia, he was officially pronounced dead in 1930, with the official date of death: December 31, 1918. Ondrej’s name was written on a Memorial dedicated to WWI victims from Lalinok village in the local cemetery on November 11, 2018. His portrait made by sculptor Michal Janiga based on the only preserved photo is also incorporated on the Memorial. You can also find Ondrej’s name on a Memorial pillar in the Emperor’s park of Kaiservilla in Bad Ischl.