The late Patty Duke, who passed away on March 29 was famous for her hit sitcom, 'The Patty Duke Show,' and for her portrayal of both Helen Keller and teacher Annie Sullivan in two adaptations of 'The Miracle Worker,' but did you now she was the mother of 'Rudy?'

That's right. According to IMDB.com, Sean Astin, who is famous for playing 'Mikey' in 'The Goonies' and 'Samwise Gamgee' in 'The Lord of the Rings,' is Duke's son.

Astin was born Sean Patrick Duke on February 25, 1971 in Santa Monica, California. His mother is actress Patty Duke. At the time of his birth, his biological father was believed to be entertainer Desi Arnaz Jr., but Astin discovered through a DNA test in the 1990s that his biological father is music promoter Michael Tell, who was married to Patty Duke in 1970. Sean was raised by his stepfather, actor John Astin, who married Patty Duke in 1972 and whose surname Sean took. Sean's mother has Irish and German ancestry, and Sean's biological father is of Austrian Jewish and Polish Jewish descent.

After Patty Duke died on March 29, Sean Astin posted several messages on Twitter in response to fans' outpouring of condolences.

 

Astin has since started the 'Patty Duke Mental Health Project' to continue his mother's work of supporting mental health programs.