I am happy to provide a photo of Habart's grave. If you would like to correspond outside of this forum on my email address - firstname.lastname@example.org
I will send a picture plus some information about Habart and his time in Norman Cross prison depot.
I am writing a book on the subject of this prison, and will be including Habart's story. I would be interested to know of his descendants (I have details of his immediate family in the 19th century). Where have they migrated to? Are they still in the Peterborough area?