Complex sentence: Ratu Epeli Nailatikau I was a paramount chief of Fiji, posthumously being made the Vunivalu of Bau, and was the eldest son of the first Tui Viti, Ratu Seru Epenisa Cakobau and his first wife, Adi Litia Samanunu.
Split into simpler sentences: Ratu Epeli Nailatikau I was a paramount chief of Fiji, who was posthumously made the Vunivalu of Bau. He was the eldest son of the first Tui Viti, Ratu Seru Epenisa Cakobau and his first wife, Adi Litia Samanunu.