RED post, thanks Judith, I have one finger typed, so I won't rise back spacing to remove my request for that link.
But the rest of my post may be helpful
Afternoon sparrett, I was informed by a helper that Samuel Sandle jnr. name was in a paper copy stating his death and that he came from Parramatta New South Wales, but no death date for him. I will have a look later some of the records are hard to read. Why then can't find his death through Ancestry? only his father is listed. 
Janet 
Hi,
There are many instances where Ancestry's database of its resources are simply inadequate when compared with the actual document upon which they are based. One example is their composite indexes for Australian births, deaths, marriages. The Early Church Records for my earliest ancestors are found indexed at NSW BDM .... it's no charge to look up those indexes and find f our example their burials. But you won't find their burials at Ancestry.
You are currently interested inl the C of E events that are registered by Rev Samuel Marsden in St John's registers. It may be of interest to check how Ancestry prepared their particular indexes for St John's.
To follow up on Sue's thoughts, may I too emphasise that Samuel, the son, died intestate. Sue is spot on, 'intestate' is a legal expression, showing that there was no valid will. ' 'Late of' in respect of a deceased person in the newspapers in the early 1800s for NSW is pointing to where they were residing when they died.

so Late of Parramatta suggests to me he should be buried in the Parramatta district.... so there's several cemeteries, but whether there was a headstone, and if it was upright and legible when teams of volunteers transcribed headstones... well I cannot promise we will find him.
In the decades 1788 to 1856, you are of course looking for a NSW burial. So I should mention that not all burials were conducted by a clergyman, and not all clergymen recorded burials in their registers, and not all registers survived and .... even those that did survive , not all were handed to NSW BDM ... and even then those held by NSW were not actually indexed until 1930s .... so pages missing, ink bleeds, clergy who scribbled, .... we are lucky to have what we do have.
Re the helper who found Samuels death .... can you pop a link to that please .... I am sure that will help advance your quest. We should be able to sort from there.
JM.