Read this and answer the question. If the question is unanswerable, say "unanswerable".

In 2010, 6.9% of the population (1,269,765) considered themselves to be of only American ancestry (regardless of race or ethnicity). Many of these were of English or Scotch-Irish descent; however, their families have lived in the state for so long, that they choose to identify as having "American" ancestry or do not know their ancestry. In the 1980 United States census the largest ancestry group reported in Florida was English with 2,232,514 Floridians claiming that they were of English or mostly English American ancestry. Some of their ancestry went back to the original thirteen colonies.

How far back did some of the Ancestry go
back to the original thirteen colonies.