Sorry to ask such a question. But does the iPad have the full Mac operating system? If the iPad works on the IOS mobile system you will be able to do what you want to do.
ipad is running ios 10.1
Started Lightroom app. There is no mechanism that allows me to see the wireless disk.
Started Seagate media and tried opening the .lrcat catalog file, to no avail.
I am still not able to do what I want to do
The Lightroom Mobile app doesn't know how to read Lightroom Desktop catalogs. The only way the two programs communicate is via syncing collections in the cloud.
You can submit a feature request in the official Adobe feedback forum: Photoshop Lightroom | Photoshop Family Customer Community
iOS 10 is a mobile operating system. You can't run the desktop Lightroom on an iPad. In order to open the Lightroom catalog it is necessary to be running the desktop version of Lightroom that runs on the Mac operating system and Windows operating system. If you subscribe to the creative cloud then you can use Lightroom mobile on your iPad and access images that you choose to share and make available from your main computer. But you cannot open a Lightroom catalog with just an iPad and Lightroom Mobile.