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Dellow was member of the theatre-society Proteus where he learnt about acting. After studying at Swedish National Academy of Mime and Acting 1974–77 he worked at Norrbottensteatern. He has also been engaged at Folkteatern i Gävleborg, the Royal Dramatic Theatre (1988–present) and Turteatern.
- 1987 - Mälarpirater
- 1991 - Tre kärlekar (TV)
- 1993 - Sune's Summer
- 1993 - Mannen på balkongen
- 1993 - Kådisbellan
- 1994 - Jönssonligans största kupp
- 1997 - Reine & Mimmi i fjällen!
- 1997 - Emma åklagare (TV)
- 1997 - Rederiet (TV)
- 1998 - Pistvakt – En vintersaga (TV)
- 2001 - Hamilton (TV)
- 2005 - Pistvakt
- 2006 - LasseMajas detektivbyrå (TV series)
- "Sök personer". Birthday.se. Retrieved 2012-07-26.