(Last Updated On: August 5, 2019)
Jonathan is an actor famous for playing Willie Oleson in the series Little House on the Prairie. He was born on 28th April 1967 in Los Angeles, California. His adoptive parents are Paul Gilbert and Barbara Cowan. He has three siblings; Claudia Cowan, Melissa Gilbert and Sara Gilbert. He has a Bachelor of Arts degree from Hamilton College. He then did his Masters at Zicklin School of Business at Baruch College.
Jonathan is married to Keren. No information is available about their relationship.
Jonathan started off his career as a child actor on the series Little House on the Prairie playing the role of Willie Oleson. The show aired from 1974 to 1983 on NBC. In 1979 he appeared on the show The Little House Years and The Miracle Worker. In 1983 he appeared on the Little House: Looking Back to Yesterday. In 1984 he appeared on The Little House: The Last Farewell.
He later stopped acting and is now a stockbroker.