You might be able to learn something about how to make this happen by creating some events directly in Events module, and then export that data.

Using the exported file, you can import the same records into another Events module.

So by reviewing that xml file you might be able to query your other data into a similar XML file, and then use it to import.

And then perhaps you can figure out from that how to bypass the XML and GUI and write direct SQL inserts, or perhaps better locate the procedures used for Events module inserts and pass data to that / those procedures.