Blackfoot, or Siksika
is an Algonquian language with about 8,000 speakers in the US state
of Montana and the Canadian province of Alberta.
The Blackfoot syllabary was devised by John William Tims (1857-1945),
an Anglican missionary from England who spent 12 years from 1883 to 1895
among the Blackfoot people in the North-West Territories of Canada (now Alberta).
Tims based his Blackfoot syllabary on James Evans' Ojibwe
syllabary and used it to produce a dictionary of the Blackfoot language and translations
of a number a biblical texts.
Nowadays the syllabary is rarely used as the Latin alphabet is prefered.