Pocahontas the actual historical figure was considered an important step in preliminary Native American - British relations. Although her act of "saving" John Smith from her father is most likely myth or a bastardized interpretation of a symbolic ritual of adoption, Pocahontas did marry John Rolfe in 1614.
This marriage occurred following her kidnap, forced immigration to Jamestown, and conversion to Christianity, after which point she was known as "Rebecca". This marriage was particularly significant not for its racial implications, as modern audiences initially assume, but for its classist implications. British culture at this point in time was more structured around the immobility and assignation of social class, and for a princess, as Pocahontas was, to marry someone not of noble blood was considered noteworthy.
Pocahontas visited the royal British court in 1616, attempting to promote more equitable relations between Native Americans and colonists, and then died in 1617 following her return to North America.