When looking for names like BROWN it is a good idea to tell helpers what you already know.
You really cannot expect helpers to spend hours researching for information that you might already have..
Do you know the children to Charles and Sarah?
If so, what are the names and dates/places of birth?
Do you have Charles and Sarah's deaths?
If so, when and where?
Do you know where/when they (or any of their children) are buried?
I see quite a few mentions on TROVE that could be possibles BUT without more information on this family it is anyones guess.