Demetrius Philipovitch
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Demetrius Philipovitch (March 9, 1818 - after August 1928) was the first male supercentenarian of the 20th century, with the next undisputed case being the one of Joseph Saint-Amour as late as 1962. However, Philipovitch's age cannot be fully verified due to the lack of a death certificate. He lived in Yugoslavia, although that country was only created after the First World War, when he was already a centenarian. He surpassed the 110 years and 135 days of Geert Adriaans Boomgaard on July 23, 1928, and was last known to be alive the following month. Had he survived until that December 4, he would have become the world's oldest person upon the death of Delina Filkins. Nevertheless, it took until 1967 for John Mosely Turner to overtake his age record.

