Hi Mary,
I have Joseph Blundell / Blunder death on 2nd April, 1852 in Windsor, New South Wales. and buried at Saint Thomas Cemetery Row 9 Plot 2 Sackville Reach, New South Wales. He is in the same plot as his wife, Jane Elkins Blundell. They were married on 4th Feb, 1834 at Sackville Reach.
I have Joseph as born on 25 Aug 1800 in Liverpool, London, England
I believe his father is William Blundell and Rachel Carr and siblings Rachel, Richard, Alice, Cathatine or Catherine, William, Margaret and John.
Joseph was tried and sentenced to death for highway robbery in Middlesex April 1816 which was commuted to life imprisonment and imprisoned on the hulk Bellerophon in the Woolwich harbour Kent England 16 Oct 1816.
Some of this information is taken from Alan Pearman site UK on My Heritage family tree, so I cannot guarantee the information is 100% correct but have confidence it is.
Phil McMahon