Actually, Luthien was half-divine, the daughter of Thingol and Melian (a Maia who stayed in Middle Earth until the death of Thingol). Thus Dior was 1/2 human, 1/4 elf, and 1/4 divine. Elwing is then 5/8 elf, 1/4 human, and 1/8 divine. Elrond becomes 9/16 elf, 3/8 human and 1/16 divine. Finally...