Hi from Brisbane, Australia.
I have Callaghan's in my family tree from Castletownroche and Ballyhooly and Buttevant areas.
They married into the Burke family who eventually made there way to Australia.
My John Callaghan 1814-1863 married Margaret Burke and had 6 children.
The Burke's also married into the Guare family. I'm assuming Guare and Guiry are the same people.
I'm also guessing our people are connected somewhere in there too.
Cheers,
Karen Burke