Queen Nefertiti was the wife of Akhnaten. This pharaoh was a revolutionary one, he tried to change egyptian religion forever. He wanted his people to adore one god, the Sun. Of course he was really hated by priests and religious people. And his revolution ended the day he died.
Nefertiti (c. 1370 a. C. - c. 1330 a. C.) She wasn't only the wife of the pharaoh, Akhnaten made her a queen with the same powers of the pharaoh, something very unusual in Egypt. That is why we see the royal couple together in political and religious representations.