Hello again,
So, we're looking for black sheep rather than boys in blue!
There are some historical newspapers online - it might be worth looking at those, but with a name like Brown, there may be many entries. There are two particular newspapers, the Lancaster Gazatteer and the Blackburn Standard which may be worth searching.
Do you have conviction dates from Ancestry, dates of birth and approximate areas/addresses they lived. It might help to narrow down the search.
Yorkslass