I'm doing a little research myself on the Burdett-Bowler family tree as I also have a distant connection to Jonathan Burdett-Bowler.
The key piece of infomation that I have missing is how/where Jonathan picked up the Burdett name. My records show that he married Emma Penton Blake and that his parents were Frederick Edward Bowler and Mary Ann Woodman, neither of whom show any connection to the Burdett family.
Do you have any information surrounding this that may be of help? I'm wondering if there was another marriage at some point.
Many thanks in advance.