Pocahontas' only son was Thomas ROLFE b=1615 m=bef.1651 Jane POYTHRESS.
There has been speculation in more recent years that after Jane died, Thomas moved to North-Carolina, remarried to a Dorothy & had more children.
The orginal theory was put forth in an 1985/08 article, "Descendants of Pocahontas: an Unclosed Case" by Elizabeth Vann MOORE & Richard SLATTEN published in the `Magazine of Virginia Genealogy' v23 #4 p3-16.
But this appears NOT to be the case after all.
Dorothy married a Thomas RELFE who was born in 1645, so he is too young to be the son of Pocahontas. This one's father who was also named Thomas RELFE would be the right age, however he was married to Elizabeth WOODLEY.