where there any backup crew members?
Yes, Lovell, William Anders, and Haise
Apollo 11
The backup crew consisted of Lovell as Commander, William Anders as CMP, and Haise as LMP. Anders had flown with Lovell on Apollo8.
when was the first moon landing and what was the name of the spacecraft July 20, 1969 and  Apollo 11 who were the crew members? Neil Armstrong and Buzz Aldrin
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Apollo 11 [SEP] Backup crew
The backup crew consisted of Lovell as Commander, William Anders as CMP, and Haise as LMP. Anders had flown with Lovell on Apollo8. In early 1969, he accepted a job with the National Aeronautics and Space Council effective August 1969, and announced he would retire as an astronaut at that time. Ken Mattingly was moved from the support crew into parallel training with Anders as backup CMP in case Apollo 11 was delayed past its intended July launch date, at which point Anders would be unavailable. By the normal crew rotation in place during Apollo, Lovell, Mattingly, and Haise were scheduled to fly on Apollo 14 after backing up for Apollo 11.