P.B.
How about Ronald and Nancy Reagan? I saw a special on his presidency and it was clear how close and in love they were until the end. They said there was never cheating, the two always stuck together...if it's all true, then they could be a great couple to remember. I also thought of Pope John Paul II and Mother Theresa. ALthough not technically a couple, they worked together closely for most of his term as a Pope to help poor people around the world and saved millions of lives.