how to find vendor info from an order

I am using Product Vendors extension for a marketplace for a client.

My question relates to “How to find vendor info from an order obtained via API or webhook?”

Here is my situation (I am still in test/development): I created an order, the order is sent through a webhook to a url. Of course I could also retrieve this order info via API since I know the order number.

After browsing through the attributes, I found the vendor info (id, name or anything) is not in it. I then looked at Woocommerce’s REST API and the Woocommerce database tables, but could not figure out how to get the vendor info.

May experts help with this question:

How to find vendor info (in my store, every single product is linked to a vendor) from either an order id, or a product id (which are in the order), through REST API or through database searches?

Thanks

JohnZ