The Baronial Order of the Magna Charta
Society, Organizations, Lineage, European Historical - The Baronial Order of the Magna Charta. Founded in 1898 under the name of The Baronial Order of Runnemede as a lineage society for those who can prove descendancy from one or more of the 25 Sureties who were responsible for holding King John to the terms of the Great Charter he signed on 15 June, 1215 at Runnemede meadow in England.
https://www.magnacharta.com/