Anna Marie Duke, better known as Patty Duke, is best remembered for her beloved film repertoire, a star on the Hollywood Walk of Fame, and numerous acting accolades, having passed away in March 2016 at the age of 69. The actress took home an Oscar in 1962 for her performance as Helen Keller in The Miracle Worker, and starred in her own eponymous ’60s sitcom, The Patty Duke Show, to name just a couple of her on-screen achievements.  And her legacy continues to live on today with her three children – one of whom has become a hugely successful star in Hollywood in his own right, starring in one of the biggest cinematic film franchises of all time. Read on for all you need to know about the late star’s children and where you know her eldest son from. © Getty Images Sean Astin, 55 Patty’s eldest son with late rock concert promoter Michael Tell is none other than Samwise himself, Hollywood actor Sean Astin. Sean was raised and adopted by Patty’s third husband, actor John …