What poem or poet is Nathaniel Hawthorne referring to in "Rappaccini's Daughter" when he writes, "The young stranger, who was not unstudied in the...

The
opening of "" bystates that 

The young stranger,
who was not unstudied in the great poem of his country, recollected that ... this family, ...
had been pictured by Dante [in] ... his
Inferno.

Thus, the end of
the sentence from which you have quoted specifies that the "great poet" is Dante
and...