Shortly after the formation of the Premier Grand Lodge of England, James Anderson was commissioned to digest these "Gothic Constitutions" in a palatable, modern form. The resulting constitutions are prefaced by a history more extensive than any before, again tracing the history of what was now freemasonry back to biblical roots, again forging Euclid into the chain. True to his material, Anderson fixes the first grand assembly of English Masons at York, under Athelstan's son, Edwin, who is otherwise unknown to history. Expanded, revised, and republished, Anderson's 1738 constitutions listed the Grand Masters since Augustine of Canterbury, listed as "Austin the Monk". William Preston's "Illustrations of Freemasonry" enlarged and expanded on this masonic creation myth.