This is not my DANDO family but I can probably add a bit of extra information for you.
George DANDO married Harriet OSBOURNE at St. Michael's, Bristol 15 April 1818.
The following may also be of interest:
Baptism - 20/2/1820 Aaron son of George and Harriet DANDO Baptism - 16/6/1822 Aaron son of George amd Harriet DANDO (presumably the first Aaron died) Baptism - 5/9/1824 Issacher son of George and Harriet DANDO
Probate Indexes (Wills):
1900 - John DANDO, proved at Bristol, executor Harriet STONE 1902 - Rosa Elizabeth Osbourne DANDO (spinster) proved at Bristol Executor, George PHELPS, malster. 1903 - Mary DANDO and Robert Nicolas Osbourne DANDO of Osbourne Cottage, Bridge Road, Melbourne, Australia, executor Harriet STONE.
I have not seen any of the above wills, but they would seem to relate to members of your family.