cwpainter,
If you have not yet taken a close look at the screenshot I uploaded you might want to look at it.
The "misc website" person who modified the library of your display before making it available
online said that he "suspects" it is a ili9328. If you take a look at the chinese website translated
by Google Translate, it has a link to download the datasheet for the ili9328. Howver, the download
link triggers a login screen which has a ":Register" button for non-members which is a dead button.
(why download a datasheet from china when it is readily available here right ?) So I downloaded
it and attached it. Granted, I don't know for sure if that is the controller used but if having the
datasheet allows you to confirm it, here it is.
ILI9328.pdf (1.23 MB)