what caused the rift between the Grand Lodge of Mark Master Masons and the older craft bodies in nineteenth-century England

The exclusion of the Mark degree from the official system of English Craft Masonry under the Articles of Union of 1813–1814 created the administrative divide between Mark Masons and the primary Craft bodies 1. When the United Grand Lodge of England established its framework at the Union, it formally restricted recognition to Pure Ancient Masonry—defined specifically as the three Craft degrees, including the Holy Royal Arch 1.

This explicit exclusion left the Mark degree outside the recognized series of ceremonies 1. Proponents argued that the Mark ceremony held a unique historical justification, descending directly from operative traditions in which stonecutters chiseled personal marks onto their work to certify craftsmanship 1. Because the Craft agreement prevented the United Grand Lodge from incorporating or recognizing the degree, lodges practicing the ceremony eventually formed the Grand Lodge of Mark Master Masons to provide governance and bring those lodges under unified authority 1.