If John was born Ireland abt 1855 he arrived married or not but I can't find his arrival.
If Bridget married in NSW then ...
??
Bridget O'DONNELL 2 Forest Monarch 1858 Sydney and/or Newcastle Reel 2138, [4/4795]; Reel 2477, [4/4974] * dv
Bridget O'DONNELL 1 Lady Elma Bruce 1859 Sydney and/or Newcastle Reel 2139, [4/4795]; Reel 2479, [4/4979] * Francis & Catherine from Donegal
I've searched Trove for 'devir' AND 'o'donnell' and no hits that help. Several possible deaths for Francis and Catherine in NSW index.