William van der Bilt is a fictional character portrayed by James Naughton in the TV series Gossip Girl.
In the first episode they appeared in, titled The Grandfather (season 2), they were 63 years old.
They appear in 10 episodes out of a total of 121 aired
Episodes10
The Grandfather
episode S2.E19 march 2009Devastated by the recent plot twist in her life, Blair turns her back on her predictable existence in favor of a wilder lifestyle.Seder Anything
episode S2.E21 april 2009Serena returns from her trip to Spain with Poppy and Gabriel; Blair makes a secret deal with Nate's grandfather; Dan gets a job.The Goodbye Gossip Girl
episode S2.E25 may 2009Gossip Girl livens things up at graduation by sending out a shocking email blast during the ceremony.Reversals of Fortune
episode S3.E1 september 2009Blair and Chuck adjust to their new status as a couple; Serena returns from Europe with many secrets and a complicated relationship with Carter.The Grandfather: Part II
episode S3.E8 november 2009Olivia says something she regrets during a talk show appearance and tries to keep Dan from finding out; Nate suspects that his grandfather will stop at nothing to get Trip elected to congress.The Big Sleep No More
episode S5.E7 november 2011Several of our favorite Upper East Siders attend a performance of Punchdrunk's provocative theater experience, "Sleep No More," which translates to masks, anonymity and some surprising romantic twists by the end of the evening. Meanwhile, Diana sets her sights on Serena in her quest to ruin Gossip Girl. Dan is out on his book tour, but things aren't exactly as they appear to his friends and family.All the Pretty Sources
episode S5.E8 november 2011Serena is hard at work planning a dream bridal shower for Blair, but it should come as no surprise that Serena has to plant some false information about the shower in order to keep Blair from finding out all the details. Chuck and Dan decide to spend the day together to distract themselves from the fact that they didn't make the invite list for Blair's shower. Nate and Serena find a silver bullet in Diana's war against Gossip Girl, but struggle about whether to use it or not.Rhodes to Perdition
episode S5.E9 november 2011Lily, Charlie and Serena eagerly anticipate the Studio 54 party being thrown in CeCe's honor. Nate takes on a new role at the Spectator, but his first big story turns out to be about someone he knows all too well.Riding in Town Cars with Boys
episode S5.E10 december 2011Lily throws Charlie a party to officially introduce her to New York society. Meanwhile, Charlie's ex-boyfriend, Max, throws a wrench into Charlie's future as an Upper East Side princess. Dan decides it may be time to tell Blair the truth about his feelings for her.Father and the Bride
episode S5.E12 january 2012Blair prepares to celebrate her upcoming royal wedding with a bachelorette party, but others scheme behind her back to make this a night to remember. After discovering the truth behind Chuck and Blair's car accident, Nate joins forces with a surprising ally to gather the evidence. Serena and Dan pretend to be dating again to protect someone close to them.
- The Grandfather
- Seder Anything
- The Goodbye Gossip Girl
- Reversals of Fortune
- The Grandfather: Part II
- The Big Sleep No More
- All the Pretty Sources
- Rhodes to Perdition
- Riding in Town Cars with Boys
- Father and the Bride