I am not sure of any of the horses were ever from UVM, but his pedigree can be seen here

http://www.allbreedpedigree.com/proud+gentleman

gonig back generations right back to Figure (Justin himself).

He goes back to Croydon Prince, Croydon Mary, Ethan Allen the third, Polly Rogers, Donald, Sealect, Coprnwallis is a Sealect son, etc.

http://www.lippittclub.net/history.php

If you scroll down you can see the foundation stock of the Lippitt, it's interesting reading.