Hermetic Brotherhood of Luxor (HBofL)

"In 1870 (and not in 1884, as the Theosophists claimed), an adept of calm, of the ever-existing ancient Order of the H. B. of L., after having received the consent of his fellow-initiates, decided to choose in Great Britain a neophyte who would answer his designs. He landed in Great Britain in 1873. There he discovered a neophyte who satisfied his requirements and he gradually instructed him. Later, the actual neophyte received permission to establish the Exterior Circle of the H. B. of L."

The Hermetic Brotherhood of Luxor was an initiatic occult organisation that first became public in late 1884, although according to documents of the order it began its work in 1870.
Hermetic Brotherhood of Luxor had just as much influence on what would become the modern Western Mystery Traditions and the Golden Dawn.
"H.B. of L." had been nearly forgotten by modern occultists after the turn of the twentieth century, especially in the wake of the "second occult revival" in the 1960s and '70s.
It is in the occult atmosphere of 1870's England that three men formed an influential magical order that included practical magical work. The extremely important history of the Hermetic Brotherhood of Light, or Luxor also known simply as the HBofL.
Hargrave Jennings (1817-1890) was a British Freemason, Rosicrucian, author on occultism and esotericism, and amateur student of comparative religion.
Max Théon (1848-1927) perhaps born Louis-Maximilian Bimstein, was a Polish Jewish Kabbalist and Occultist. In London while still a young man, he inspired The Hermetic Brotherhood of Luxor in 1884.
Paschal Beverly Randolph (1825 – 1875) was an American medical doctor, occultist, Spiritualist, trance medium, and writer. Randolph is notable as perhaps the first person to introduce the principles of sex magic to North America.
There is some dispute over whether Theon taught Blavatsky at some stage. The Theosophical adept Tuitit Bey might have been based on Theon.
If you search you will find Thomas H. Burgoyne(1855-1894), an astrologer and founder of the Hermetic Brotherhood of Luxor. Spontaneously psychic, he claimed that as a child he came into contact with the Brotherhood of Light, a group of discarnate, advanced beings who attempt to guide the destiny of humankind.
Actually Thomas Henry Dalton was T. H. Burgoyne, one of the founders of the Hermetic Brotherhood of Luxor, the author of The Light of Egypt[1].
What we actually know about Dalton is: not much. There is as much legend and surmise in the various versions of his biography one can find on the Web as there is verifiable, or triangulated, fact:
• Thomas Henry Dalton married, in the early 1880s, and fathered two children, a boy and a girl, before he did seven months in prison for mail fraud in the UK in 1883 (a fact we know for sure because it served the Theosophical Society well to document and broadcast it, well before 'smear campaign' was part of the cultural vocabulary)
• He left that family, in England, when he came to the US to found the HBofL colony with Peter Davidson
• That family survived, even prospered, and came to the United States, with their children/grandchildren in tow, in the early 1920s

[1] Sarah Stanley Grimke(Personified Unthinkables, 1884; First Lessons in Reality; A Tour Through the Zodiac; all bound under Esoteric Lessons, 1900) was credited with co-authorship of The Light of Egypt by her sister, who wrote to Sarah’s daughter after her death. Daughter of an abolitionist clergyman who served in three denominations, Stanley married Archibald Grimke[(1849 –1930) an American lawyer, intellectual, journalist, diplomat and community leader in the 19th and early 20th century] in 1879 (parents opposed her interracial marriage) and the next year bore their only child, Angelina Weld Grimke.
Archibald was the biracial son of Henry Grimke, a white slave owner and Nancy Weston, an enslaved woman of European and African descent. She was described in one account as the most beautiful black woman in Charleston. His aunts Sarah and Angelina Grimke were leaders in the abolitionist movement who like Archibald had left their native Charleston and relocated to Massachusetts.
After the collapse of their marriage in 1883, Sarah took young Angelina to live with her in Michigan, but in 1887 returned the child to her father in Washington, D.C. due to the discrimination she faced as the mixed-race daughter of a white woman. For the rest of her life Sarah wrote on occultism and mental healing and traveled widely. Whatever the nature of the collaboration, it seems that Grimke played the role of an HBofL member living in California and assisting Burgoyne in his writing. But her stay in California was not long, as in 1888 she went to New Zealand at the invitations of a publisher, and remained there until a heart attack required her return to the US where she initially stayed with her parents in Michigan. Sarah returned to California, still in poor health, and died in San Diego in 1898.

One of the earliest of the mental science writers, Miss S. S. Grimke, in a book bearing the curious title Personified Unthinkables, 1884, interpreted the practical idealism with special reference to mental pictures and their influence. This emphasis on mental pictures was characteristic of Mr. Quimby. In fact, Quimby sometimes described the mental part of his treatment with reference to the pictures he discerned intuitively in the patient's mind, and the ideal pictures in connection with which "the truth of a patient's being" was established in place of the "error or disease."
A History of The New Thought Movement
by Horatio. W. Dresser
1919
Chapter Six - The Mental Science Period
Which isn't to say that HBofL or Grimke's works in anyway resembled Quimby. Dresser was merely giving credit to her as the 1st to reference mental pictures.