General Note on Middle Names (for the Tracy sons)
The only detail we have from all the sources is that the Tracy boys are ‘named after’ the Mercury Seven astronauts. This is ambiguous as to whether this means that both the astronaut’s first and surname were taken (e.g. Scott Carpenter Tracy) or just the first name (Scott Tracy). However, we are never given any other middle name for any of the boys, so this is one of those cases that is open to personal interpretation and whatever name a fan fiction author decides to use, no-one can say it is ‘incorrect’.