The Baronetcy of Ellis-Nanney of Gwynfryn and Cefndeuddwr was granted to Hugh Ellis-Nanney in 1898. The 1st baronet was a landowner with over 12,000 acres in North Wales, UK, most of which was inherited from his father, Owen Jones Ellis-Nanney. The family were political Conservative party members within the parliamentary constituency of Caernarfon, Wales.

Sir Hugh John Ellis-Nanney, 1st Baronet, was a Welsh landowner, magistrate and political candidate.