Hi Texas
There are a couple of possibilities for your Michael, Kenjo has probably picked the best one. There are some spelling variations

(nothing new in that)
John Hughes married Bridget Briheny 22 Apr 1865 1865/ 000460
(As mentioned, a B in the code indicates Brisbane registration; no B means anywhere else in Queensland).
Children
John 6 Feb 1866 1866/001687
Michael Joseph 20 Nov 1869 1872 / 000231LR
LR - Late registration - Mother's name spelt Baiheny
Thomas James 31 Jul 1871 1871/ 002866
The alternative Michael was born to Michael Hughes and Jane Mooney - could not find a marriage. (Possibly in NSW - given the dates & separation date)
Children
Catherine Jane 6 Sep 1863 1863/B002086
Mary Anne 31 Aug 1865 1865/B 004319
Michael 31 Jan 1868 1868/ 000401
Could not find a marriage to Jane Riordan, but did find Jane Reardon married Michael Hughes 20 Aug 1903 1903/000389
Children to Michael and Jane
Michael 3 Nov 1903 1903/ 001863
Catherine May 16 May 1906 1906/002161
George William 9 Dec 1908 1908/002498
The mother's name then changes to Riordan (if same person)
John Thomas 18 Nov 1911 1911/002631
Henry Joseph 9 Oct 1914 1914/003056
There could be more the CD ends 1914, Fiche are available to 1918.
Could not find a birth for Jane. The closest was
Mary Jane Reardon Parents Edward Timothy and Catherine Horan 13 Mar 1884 1884/001759
Trish