Far more formidable was the schism of 1753, which had its origin, as is now thought, in a group of Irish Masons in London who were not recognized by the premier Grand Lodge.[146] Whereupon they denounced the Grand Lodge, averring that it had adopted "new plans" and departed from the old landmarks, reverted, as they alleged, to the old forms, and set themselves up as _Ancient_ Masons--bestowing upon their rivals the odious name of _Moderns_. Later the two were further distinguished from each other by the names of their respective Grand Masters, one called Prince of Wales' Masons, the other the Atholl Masons.[147] The great figure in the Atholl Grand body was Lawrence Dermott, to whose keen pen and indefatigable industry as its secretary for more than thirty years was due, in large measure, its success. In 1756 he published its first book of laws, entitled _Ahiman Rezon, Or Help to a Brother_, much of which was taken from the _Irish Constitutions_ of 1751, by Pratt, and the rest from the _Book of Constitutions_, by Anderson--whom he did not fail to criticize with stinging satire, of which he was a master. Among other things, the office of Deacon seems to have had its origin with this body. Atholl Masons were presided over by the Masters of affiliated Lodges until 1756, when Lord Blessington, their first titled Grand Master, was induced to accept the honor--their warrants having been left blank betimes, awaiting the coming of a Nobleman to that office. Later the fourth Duke of Atholl was Grand Master at the same time of Scotland and of the Atholl Grand Lodge, the Grand Lodges of Scotland and Ireland being represented at his installation in London.