'The Lord of the Rings' star Sean Astin loves his big, blended family. Here’s everything to know about Sean Astin’s mother Patty Duke, his father John Astin and his biological father Michael Tell.

The outcome: Michael Tell was Sean’s father. “If you want to know who I am, John Astin is my father, Michael Tell is my biological father,” Sean told PEOPLE in 2001.

Michael Tell, a concert promoter and chronicler of Las Vegas's Jewish community, passed away at 80, leaving a legacy in journalism and music.

But she later told Sean that Desi Arnaz Jr. was his biological father. Astin later confirmed through a DNA test in 1994 that his biological father was actually Michael Tell.

Sean Astin’s Complicated Family History Led Him to Believe Lucille Ball Was His Grandmother Sean Astin grew up in a famous household, but his background is more complicated than you might expect.

Sean Astin told UPI that his new sci-fi thriller, "The Shift," explores the concept that every decision, regardless of how small, could impact the rest of a person's life.

‘Goonies’ star Sean Astin, LDS apostle Gerrit W. Gong highlight SLC’s RootsTech 2023 genealogy conference Astin speaks about how his family history has made an impact on his relationships today.

Here is everything to know about Sean Astin’s parents: Patty Duke, John Astin and Michael Tell.

Michael Tell, a prolific and proud Nevada newsman who carried on his father’s legacy by taking charge of the long-running Las Vegas Israelite newspaper, died Sunday.