[1][2] Kjellin underwent two changes of names in his early days in Hollywood.

Producer Stanley Kramer wanted him to make another change for another film, but Kjellin insisted on using his real name from that point on.

[3] Kjellin was well established as a film actor when he occasionally took on roles in television shows.

For example, in 1965 he prominently guest-starred as Stalag Luft Kommandant Colonel Max Richter in the two-part episode "P.O.W."

[5] Kjellin was born in Lund, Sweden and died in Los Angeles, California of a heart attack.