The area in and around Ipswich (West of Brisbane) was settled by Welsh people (and Germans, and Scots, and people from north-east England) in the 1800s; there's a suburb called Ebbw Vale that springs to mind straight away. It was a fairly large coalmining area too. Should be able to remember some of the other places around there, but can't right now.
[DrQ] Hm. Isn't it a bit rude to go slapping peoples' email addresses on public web pages without asking first, or any attempt at obfuscation? [rab] Can you sort that our for me, please?