Editors. "John Penry is executed for denying Queen Elizabeth's royal supremacy". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15458, accessed 20 June 2013.]
John Penry, a Puritan, is executed for denying Queen Elizabeth's royal supremacy. He followed the ideas of Robert Browne, a congregationalist who believed that that church should be able to enact reforms without the intervention or agreement of the civil authorities.