Complex sentence: Eddie Applegate (born October 4,1935) is best-known for his work as a television actor in the 1960s, primarily in the role of Richard Harrison, the boyfriend of Patty Lane (played by Patty Duke) on the Patty Duke Show.
Split into simpler sentences: Eddie Applegate (born October 4,1935) has worked primarily as a television actor starting in the early 1960s. He is most famous for appearing in the role of Richard Harrison, the boyfriend of Patty Lane (played by Patty Duke) on the Patty Duke Show.