By the early 1870s, Blavatsky was involved in the Spiritualist movement; although defending the genuine existence of Spiritualist phenomena, she argued against the mainstream Spiritualist idea that the entities contacted were the spirits of the dead.
Relocating to the United States in 1873, she befriended Henry Steel Olcott and rose to public attention as a spirit medium, attention that included public accusations of fraudulence.
In 1835, mother and daughter moved to Odessa, where Blavatsky's maternal grandfather Andrei Fadeyev, a civil administrator for the imperial authorities, had recently been posted.
She gained an international following as the leading theoretician of Theosophy, the esoteric religion that the society promoted.
31 July] 1831 – ) was a Russian occultist, spirit medium, and author who co-founded the Theosophical Society in 1875.
Recovering in Tiflis, she claimed that upon awaking she gained full control of her paranormal abilities.
In 1867 she proceeded to the Balkans, Hungary, and then Italy, where she spent time in Venice, Florence, and Mentana, claiming that in the latter she had been injured fighting for Giuseppe Garibaldi at the Battle of Mentana.