A way that names can get changed is via the military.
How did you know my nickname was Alfie?Your Grandpop was named Alfie Manumuskin?
Sorry Al, cabin fever here. I am Ed the third but somewhere someone changed it to 3D, it's every where now.
You always have to keep some skepticism when looking at documents and even maps. Even when you find what you think corroborates your find it could just be a repeated mistake. I have seen this in NJ Topos.