Jeff Conaway: Jeff Conaway. Actor: Grease. Jeff Conaway was born on 5 October 1950 in New York City, New York, USA. He was an actor and writer, known for Grease (1978), Taxi (1978) and Jawbreaker (1999). He was married to Kerri Young and Rona Newton-John. He died on 27 May 2011 in Encino, Los Angeles, California, USA.