Patrick Duffy aka Frank Lambert
Patrick Duffy played Frank Lambert, the patriarch of the Lambert family. Most viewers knew him from the smash hit prime time soap opera Dallas, where he played Bobby Ewing, the brother of J.R. Ewing. Duffy had just finished his first run on Dallas before joining the sitcom cast. Duffy graduated in 1971 from the University of Washington with a degree in drama.
Source: MoviestillsDB.com / Copyright: Bickley-Warren Productions, Lorimar Television, Miller Boyett Productions
Many don’t know that Duffy was an accomplished singer. He recorded a duet with French crooner Mireille Mathieu which reached #5 on the charts in Holland. After Step by Step was canceled, he found himself back in his biggest role, the 2012 Dallas reboot, Dallas: War of the Ewings.