Your question is based on a false premise: that native Americans historically had a first, middle and last name just like Europeans or white Americans. This is incorrect. Only under the reservation system in the late 1800s were natives forced to adopt names like those of white people.
The young Shoshone woman you mention was captured by an enemy tribe and eventually traded to the Hidatsa people of the Upper Missouri; they named her Tsakakawia (Bird Woman) - this was her full and complete name. Lewis and Clark misunderstood this native name and recorded it in different ways - the version Sacagawea is perhaps closest to the real name (it was never spelled with a j during her lifetime).
Baptiste
it is Sacajawea killa bee
she did not have a last name it was only a first name
Sacajawea tribe was called the ShoshoneShoshone
Native Americans did not have last names. We were only given last names when European contacts forced them onto us-so they were Anglicized names such as "John" and "Williams". Sacagawea did not have a last name.
Sacajawea was a shoshone Indian princess.One day when Sacajawea and her brother were hunting the minnetaree Indians attacked their shoshone village.They killed Sacajawea's father and captured Sacajawea,other children and women.So she went from being a princess to slave.After when she was to old to be a slave they traded her to charbonneanu who was a trapper in canda. . Sacajawea's shoshone name was Boinai which meant ''Grass Maiden. The name Sacajawea ment ''Bird Woman''.
Boinaiv
Sacajawea brother was Cameahawiat, chief of the Shoshone tribe.
the name Sacajawea name was "bird women", too
Jean Baptiste
Sacajawea, whose name is believed to mean "bird woman". Also there is only one way how she got her name, blah blah blah she got her name by her parents naming her.
Jean Baptiste