They had 4 children in Queensland:
Year Reg# First name(s) Last name Father Mother
1860 C687 Harriet Boyce Charles Rose Dunn
1862 C825 Unnamed (F) Boyce Charles Rose Dunn
1864 C1146 Unnamed (F) Boyce Charles Rose Dunn
1867 C1894 Harriet Adelaide Boyce Charles Rose Dunn
They had a few more died in Queensland:
Year Reg# First name(s) Last name Father Mother
1915 C3506 Charles Boyce Charles Boyce Rose Dunn
1942 C922 Thomas Albert Boyce Charles Rose Dunn
1867 C850 Harriet Adelaide Boyce Charles Boyce Rose Dunn
1863 C507 Harriet Boyce Charles Boyce Rose Dunn
1863 C549 Louisa Boyce Charles Boyce Rose Dunn
The C before the Registration number means "country" but as far as I can tell it means it was not in Brisbane OR the place was not listed.
To search yourself try this:
QLD BDM