There's a separate Fasti for Ireland, so if John Millar was a minister only in Ireland then he would be in that one alone. It's searchable online at
www.ancestryireland.com but you need to be a full Member to access it. I paid myself and found it (just about) worth the money for my trio of Irish ministers, on which I had few other details
If I can find my membership number

, and you're still watching this post (and I'm not breaking the terms of access at AncestryIreland), I'll look him up for you. Let me know...
<b>Btw does anyone know if/where there's a decode for the initials used in Fasti, eg the place where educated?</b>