Your Eleanor Gelling who married Thomas Clague 1804 is for sure the grandaughter of the John Gelling & Catharine Killey of Ballamillaghyn who we've been talking about in this message string. Her parents were Robert Gelling 1744-1807 Miller of Marown and Jane Kelly ca 1745-1808.
I don't have much information on your particular line and nothing on the Australia end. I think your profile says they went there in 1853 (now I can't go back to check or I'll lose this note!). I'd love to be able to fill some gaps. My email is egelling at shaw dot ca. Thanks, Patsy.