The earliest masonic documents are those of their early employers, the church and the state. The first claimed by modern Freemasons as the lineal ancestors of their own "Charges" relate to the self-organisation of masons as a fraternity with mutual responsibilities. From the reign of Henry VI to the Elizabethan period, that is from about 1425 to 1550, surviving documents show the evolution of a legend of masonry, starting before the flood, and culminating in the re-establishment of the craft of masonry in York during the reign of King Athelstan.