Epitaxy of thin films of Ba2EuFeNb4O15 grown by pulsed laser deposition achieved. Non-trivial epitaxy relationship of c-oriented films on SrTiO3 substrates. Composite nature of the PLD-grown epitaxial thin films established. Ferroelectric and ferromagnetic properties of the nanocomposite films verified. Novel multiferroic epitaxial nanocomposite films at room temperature demonstrated.