Ion Theodorescu-Sion (1882–1939) was a central figure of Romanian modern art, known for forging a bridge between European modernism and local visual traditions. Born in Ianca, Brăila County, he grew up near the Danube plain, an environment that shaped his lifelong interest in rural life and regional identity. He studied at the National School of Fine Arts in Bucharest before continuing his education in Paris, where he trained at the École des Beaux-Arts under Jean-Paul Laurens and Luc-Olivier Merson. Exposure to Symbolism, Post-Impressionism, and early Cubist ideas encouraged a restless, exploratory approach rather than allegiance to a single style. After returning to Romania, he became associated with the progressive group Tinerimea Artistică, challenging academic conservatism. His work evolved through Symbolist, decorative, and constructivist phases, gradually emphasizing simplified forms and structural clarity. During World War I, he served as a war artist, an experience that deepened his focus on ordinary people and national realities. In the interwar years, he aligned with the Gândirea circle, seeking a modern art rooted in Romanian folk and spiritual traditions. Awarded several state honors, Theodorescu-Sion left a legacy defined by synthesis, adaptability, and cultural mediation.