In America during the middle of the nineteenth century, after the Civil War, there existed a number of uniformed military societies. The Knights of St. Paul, Knights of St. George, the Knights of St. Louis, and many more, were a modern counterpart of knights of old. The medieval knights fought well for God and the Church on the field of battle, but these new groups chose a different field, a spiritual one, whereupon they could strive to capture men’s hearts and minds for God.
These various groups of Catholic Knights were distinguished by descriptions of uniforms, by-laws, aims and purposes. Some wore uniforms modeled after the steel armored uniforms of the ancient knights, coats of velvet, brass plumed helmets bedecked with feathers, shining breastplates, leggings with enormous boots with spurs. Some had by-laws to aid various segments of immigrants, others for the purpose of musical and literary enrichment, for the veneration of a certain saint, payment of sick benefits to members and their families, payment of death benefit to widows and orphans of deceased members. All had the central purpose to serve Almighty God and His Church.
Several of these organizations met by chance in Rochester, New York, in June of 1874, in a common convention. Visiting delegates were favorably impressed, and returned to their home cities, determined to form joint organizations at home. It was incorporated by a special act of the Legislature of the State of New York. Combined commanderies soon came into existence in Buffalo, Baltimore, Cincinnati, Detroit, Syracuse, Denver, Dayton, Toronto, Louisville, and Columbus. Each of these combined groups still had their own individual laws, and followed its own discretion in regard to uniforms.
On October 15, 1879, some Commanderies of Catholic Knights from Baltimore, Washington and Cincinnati met in Baltimore to consider and discuss the question of the formation of a national organization that would result in a merger or union of the various Catholic uniformed societies of the country under one head. After deliberations it was decided to form such a body, and an organization was perfected with the election of officers and the selection of the name, “The Roman Catholic Union of Knights of St. John.” The next convention was held in Cincinnati in 1880,and more commanderies became affiliated with the “Union.” A resolution was later adopted to shorten the name to “Knights of St. John.”