The saying 'it a wise man that knows his own father'could be extended to 'own mother'.
It is interesting to observe that apart from the 'nine days wonder' when the Native Americans were brought to England in the early 1600's, very little interest was taken in having a 'supposed' lineage from Native Americans for centuries. At that period the English refered to them as 'savages' which meant 'non Christian' and their aim was to get them baptised when they would be 'acceptable' to the thinkings of the 17thC Englishman. That was why it caused such a stir when John Rolfe married Pocahontas, and he wrote a very Calvenistic letter worrying whether he ought to marry her, but concluded that as she had been baptised it would be a 'christian' act.
Of course many English men formed liasons with the native woman and children were born
Then suddenly in the late 1700's Pocahontas was the 'name' and many wanted to claim a descent from her. This is where many myths arose as facts were twisted to achieve their aims.
Claiming descent has come back again this century but with the advent of the web so much false information is copied on and on. It is rare to ever see a source quoted- just a line of descent with so many inaccuracies it is unbelievable.
I have become very cynical these days - hence my request for "please quote your sources"- and "have you checked them?" Some researchers never do this.
Recently there were some malicious attempts to insert papers in some archives to 'alter' the historical worth. In my opinion though not shared by many is that researchers who claim descent but do not check are as guilty.