Who was included in the back-up crew for Apollo 11?

The backup crew for Apollo 11 was James Lovell (CDR), Fred Haise (LMP) and Ken Mattingly (CMP). They later became the prime crew for Apollo 13, though Mattingly was removed from the Apollo 13 crew a few days before launch due to exposure to measles. Jack Swigert, Apollo 13 backup CMP, replaced him. Mattingly later filled what would likely have been Swigert's originally-planned seat on Apollo 16.