Tolkien's Earendil was definitely a reference to the morning star, but outside his legendarium I don't know of anyone spelling it "dil" instead of "del". If it

Tolkien's Earendil was definitely a reference to the morning star, but outside his legendarium I don't know of anyone spelling it "dil" instead of "del". If it was supposed to be a non-Tolkien reference I would've expected them to spell it accordingly.