Edd Byrnes is best known for his role as “Kookie” in the late 1950’s series “77 Sunset Strip” which he made with Efrem Zimbalsit Jnr and Roger Smith.   He was born in 1933 in New York City.   He had a Warners Brother’s contract and starred in “Darby’s Rangers” , “Marjorie Morningstar” and “Yellowstone Kelly”.   In 1978 he starred with John Travolta and Olivia Newton-John in “Grease” which restored his popularity.   An interview on Youtube here.   Edd Byrnes died in 2020.