Casey Wilson and David Caspe are to be married Sunday at the Ojai Valley Inn in Ojai, Calif. Fletcher T. Wilson, the bride’s brother who became a Universal Life minister for the event, is to officiate.

The bride, 33, an actress and writer in Los Angeles, and the groom, 35, a writer and producer of television shows and films there, are working together on a new television sitcom, “Marry Me,” which is to appear on NBC in the fall. The show, about a couple who find out that being engaged is more difficult than they anticipated, is being written by Mr. Caspe and will feature Ms. Wilson in a leading role. Mr. Caspe was the creator of the ABC sitcom “Happy Endings,” which ran from 2011 to 2013; Ms. Wilson also had a starring role.

The bride was in the cast of “Saturday Night Live” in 2008-9. In October, she will appear in the film drama “Gone Girl” and is in the upcoming film, “Me Him Her.” She was also a writer on the movie “Bride Wars” (2009) and performs regularly with the Upright Citizens Brigade, a comedy troupe, in New York and Los Angeles. She graduated from New York University.

She is the daughter of Paul O. Wilson of Alexandria, Va., and the late Kathy Wilson. The bride’s father owns Wilson Grand Communications, an Alexandria-based political consulting firm. Until 2005, her mother was the director of Abracadabra Preschool in Alexandria.