I know some things about the Powhatan and the fake family members that have been fabricated in that line. Most "sources" people use when claiming these things are user-submitted family trees on genealogy sites like ancestry.com. Anyone can edit those trees, and unless there is sourcing, they are not reliable. It is very common for fantastical trees to wind up inserted in otherwise normal people's collections, with everything from invented Indians to European royalty.
One of the things I look for is when a normal person has, in well-sourced trees, an unknown mother or father. Then you look at trees for them without sources and there is, for no reason, a famous person with the same surname just plopped in. Sometimes these trees will have "sources" attached, but when you open them up... the attached "sources" do not source the content at all. They are often records for completely different people.
The line in question is supposedly the family of Matoaka ("Pocahontas"). My family line has one of the women from that family, who does seem to have existed, but any details about her are pretty much impossible to pin down at this point. People have invented ridiculously-named fake parents for her, along with about 14 children she never had (including the completely-fabricated "Princess Niketti"). People have tampered with the documentation so much I can't even be sure that *her* name is right. Usually when you look at trees that claim her, the attached sources are not for her at all, but for "Rebecca Rolfe", the English name Matoaka was known by after marriage and baptism, or for an Algonquin woman whose birthdate is off by 100 years. People tend to get really dumb and gullible when they are determined to find a connection that just isn't there.