The Order of Saint Joachim was an order of chivalry founded in 1755 to promote religious tolerance in Europe.
It is unclear whether an existing modern order of the same name "reorganized" in 1948 is a continuation of the original order or is a 20th-century revival. At present the order is said to primarily carry out charity work and it is considered to be a "self-styled order" by the International Commission on Orders of Chivalry.
Admiral Horatio Nelson, accepted the Grand Cross of the order in 1802.
The "Equestrian, Secular and Chapterial Order of Saint Joachim" was established in 1755 by a group of German nobles. Prince Christian Franz von Sachsen-Coburg Saalfeld, the son of Francis Josias, Duke of Saxe-Coburg-Saalfeld was installed as its first Grand Master on June 20, 1756, a position he held until 1773.
The Order had fourteen founding members who were nobles and military leaders of the Holy Roman Empire:
Having seen the consequences of ongoing religious wars in Europe, the Order's founders dedicated themselves to "worship the Supreme Being, show tolerance towards all religions, loyalty towards their princes, support the needs of their military, the poor, widows and orphans." [Perrot: 1821]. The Order was uniquely composed of both Protestant and Catholic nobles and leaders at a time when religion violently divided Europe and the German states within the Holy Roman Empire, and other knightly orders allied themselves exclusively with one faith or the other.
When the Order was founded in 1755, it was originally with the name "The Knights of the Order of Jonathan, Defenders of the Honour of Divine Providence". In 1767 the reference to Jonathan was removed from the name. Finally, in 1785 a further change was made, and the Order's constitution was revised by the General Chapter to rename it "The Equestrian, Secular and Chapterial Order of Saint Joachim".
Albert Pike, prominent American Mason and American Civil War general, associated the Order of Saint Joachim with Illuminati-related Enlightenment societies. In his 1883 work, "A Historical Inquiry In Regard To The Grand Constitutions Of 1786", he stated that the disbanded Illuminati continued on through the various branches of the Rosicrucian Order, including the later versions of the Gold Rosicrucians, namely, the Order of Perfect Initiates of Asia, or the Asiatic Brethren, and the various Orders of Light, specifically mentioning "The Order of Saint Joachim (St. Jonathan)". However, having been founded in 1755, The Order of Saint Joachim pre-existed the Illuminati. Records show that a few Illuminati were members of the early Order of Saint Joachim, specifically Count von Kollowrat-Krakowsky, as well as Freemasons and Rosicrucians. The Order of Saint Joachim had direct connection to the Gülden und Rosenkreuzer (Gold Rosicrucians), founded in 1777, which also had Illuminati and Masonic roots. The Gold Rosicrucians was Hermetic in character, drawing heavily on Eastern and Islamic mysticism. The Gold Rosicrucians was headed by Johann Karl Baron von Ecker und Eckhoffen, who in 1787 was Chancellor of The Order of Saint Joachim. Baron von Ecker und Eckhoffen is named as a member of several other mystic societies, including the Christian Masonry of Bohemia in 1756, and the Asiatic Brethren.