Though a key figure in the court of Frederick II and a noted poet, jurist, letter writer, and rhetorician, Pier della Vigna is probably best known through Dante’s imagining of him as a tree in the forest of suicides in Inferno 13. His poetic output is minor, consisting of a mere five lyric compositions attributed to him (and even those are not with the unanimous approval of scholars), but his figure looms large as an interlocutor in a key poetic exchange with Iacopo Mostacci and Giacomo da Lentini on the nature of love. Far more weighty, perhaps, is his Latin output of more than 200 texts, consisting of public and private letters, imperial decrees, and rhetorical compositions. The remarkable arc of his career as a notary …
Kumar, Akash. "Pier della Vigna". The Literary Encyclopedia. First published 20 January 2014; last revised .
[http://www.litencyc.com/php/speople.php?rec=true&UID=13232, accessed 06 July 2015.]