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Sergio Osmeña, the oldest person to assume the Philippine presidency before Rodrigo Duterte, took office at the age of 65 in 1944. He served as the fourth president of the Philippines from 1944 to 1946, during the latter part of World War II and the early post-war period. Osmeña's presidency was marked by his efforts to rebuild the country after the war and to establish a stable and democratic government.