Some of the names mentioned are real people, although there are no real people as characters (they are merely mentions). Martin Poppins (who will come in later on in the story) is based on a musician I like called Scott Joss (whose name is mentioned, alongside the band that he's a part of), and the main female character (Jennie, who will become James) is compared to Rob Paulus (albeit a female version, and whose name is also featured). They are in no way related to the family featured in Mary Poppins, and there will be more to the family than meets the eye (such as the fact that Jennie's adoptive mom might not be all that she seems to be. The setting for the story is rural Pennsylvania in the 2010s, and Martin is like his grandmother but in a modern way. Also, when he comes in, the story will shift over to his POV, and there will be a relationship between him and Jennie/James (aswell as possible mpreg, like I've already mentioned), and the "children" are older so the punishments are a little more than taking away favorite toys for the week. As for references to the movie, yes, there will be a couple, as Martin has a lot of stories to tell.