William "Tripp" van der Bilt III is a recurring character on the American drama series, Gossip Girl , portrayed by Aaron Tveit. Being the elder cousin of Nate Archibald, Tripp serves as a rival for Nate later on as they compete for the affections of their grandfather, William.
Tripp van der Bilt is the grandson of William van der Bilt, who is a very "political minded" man, and Nate Archibald's older first cousin. Throughout the series, Tripp competes with Nate for the affections of their grandfather.
- William van der Bilt II (father)
- Unnamed woman (mother)
- William van der Bilt I (paternal grandfather)