There is no evidence that the Blackfoot created any blood brothers prior to the ceremony in 1985. And that “ceremony” was not held by the Blackfoot tribe. Diligent research would have taken Melton to the LA Times article of 24 June 1990, where we find this:
“Historian Hugh Dempsey is associate director of the Glenbow Museum in Calgary, Canada. He has extensively researched the tribe, of which his wife is a member. He said that blood brothers are ‘an old Hollywood idea’ and that the act was ‘never done among the Blackfeet.’”
As to the ceremony: “In 1985, church leaders produced a document that they say proves Hubbard was not lying.
“Typed on Blackfeet Nation stationery, it states: ‘To commemorate the seventieth anniversary of L. Ron Hubbard becoming a blood brother of the Blackfeet Nation. Tree Manyfeathers in a ceremony re-established L. Ron Hubbard as a blood brother to the Blackfeet Tribe.’
“The document actually is meaningless because none of the three men who signed it were authorized to take any action on the tribe’s behalf, according to Blackfeet Nation officials.
“The document was created by Richard Mataisz, a Scientologist of fractional Indian descent. Mataisz said in an interview he tried to prove that Hubbard was a Blackfeet blood brother but came up empty-handed.
“‘It’s not,’ he said, ‘something you go down to the courthouse and look up.’
“So Mataisz, using the name Tree Manyfeathers, said he held a private ceremony, made Hubbard his own blood brother and, along with two other men, signed the commemorative document.