Is this the person you are researching?
SA BDM 
1853   16/1   MORRIS   Richard  marr.   RUNDLE   Mary Ann      @  Adelaide
births
1853   MORRIS   Eliza      
parents Richard MORRIS / Mary Ann RUNDLE   @ Adelaide 4/190
1861   MORRIS    Harriet 
parents Richard MORRIS / Mary Ann RUNDLE   @ Adelaide  20/57   
1862   MORRIS   Mary Ann   
parents Richard MORRIS / Mary Ann RUNDLE   @ Adelaide  20/400
BDM VIC death
MORRIS   Albert
parents MORRIS Richard / Mary Ann (Rundle)   1935    18906
died Warrnambool age 58 
South Australian Register 2 Nov 1864 p2
https://trove.nla.gov.au/newspaper/article/39126541?...Richard MORRIS not supporting Mary Ann MORRIS...five children....
Evening Journal 22 Mar 1872 p2
https://trove.nla.gov.au/newspaper/article/196738920?...Richard MORRIS son of Mary Ann MORRIS....
If Richard did not stay with his family, I doubt that the QLD death, 1885, is him....with good details about his parents.
You have the marriage certificate, 1853. What church are they married in.....who are the witnesses.....does Richard sign his name?
Where do you see a suggestion of occupation for him?