Hi Graham,
Galway County Council has some workhouse records for Ballinasloe online. They can be found here.http://www.galway.ie/digitalarchives/?fbclid=IwAR05cYxLGu29434KGg-5iIysQUTMSzwITVa6KUrZR3BTr80gqODHgS09Wes
They are incomplete but you might find them useful.