What in particular are you looking for?
There's a Patrick Thomas McManus born 1880 Country, Qld
Father John McManus, Mother Mary Elizabeth Hannifan?
No marriages up til 1938 in Qld.
Have you tried NSW BDM? This is a Tenterfield birth in 1886 that could be a possibility as it is near the QLD border.
http://www.bdm.nsw.gov.au/cgi-bin/IndexSearch?form=IndexingSearch&SessionID=43952955&sname=mcmanus&gname=patrick&fname=&mname=&event=births&frange=1880&trange=1913&place=