Jonathan J. Gilbert is an American former television and film actor known for his role as Willie Oleson on the TV series Little House on the Prairie.
Gilbert was born on April 28, 1967. He is the adopted son of actors Barbara Cowen (née Barbara Crane) and Paul Gilbert and adopted brother of actresses Melissa Gilbert and Sara Gilbert. In Melissa Gilbert's autobiography, she wrote that when Jonathan was 18, he moved away from California and she had no relationship with him since then, for reasons supposedly unknown to her. Her autobiography states that he is a stockbroker living in New York City. He reunited with his sister, Melissa, and the cast of Little House for the 50th anniversary reunion of the show in Simi Valley on March 22, 2024.
