No one has ever reported that, for 18 months, Project Marklar existed only because a self-demoted engineer wanted his son Max to be able to live closer to Max’s grandparents.
Part of the fascinating story of how one engineer started the process of getting the Mac to work with Intel told by Kim Scheinberg, wife of the engineer. How Does Apple Keep Secrets So Well? | Quora
Kim later responds to answer how the name Project Marklar was chosen.