Looking for William and Elizabeth Morrison Hobart Aus

I am looking for information on William and Elizabeth MORRISON (nee HAUGHTON) - my gr-gr-gr Grandparents. The only information I have on him so far is the following newspaper notice of William Morrison's death in The Mercury (Hobart) 6 Sept 1872

MORRISON - On Tuesday, 3rd September, at his residence, 64 Goulburn-street, William Morrison, late of H. M. 48th Regiment, aged 64 years.

This notice was copied to New Zealand papers and added to with the inclusion of 'and father of W. Morrison, Ketch Falcon'. This W. is my gr-gr grandfather W. John Morrison.

The only information I have on Elizabeth is on her son John's death record where it states the name of his parents, his father's occupation - soldier - and his place of birth - Dublin, Ireland.

I have not had any luck tracing William in regiment records or discovering his place of birth. Any help with William and Elizabeth would be appreciated.

Janet