Guiding Light (known as The Guiding Light before 1975) is an American television soap opera listed in "Guinness World Records" as the longest-running drama in television in American history, broadcast on CBS for 57 years from June 30, 1952, until September 18, 2009, preceded by a 19-year broadcast on radio.
 "Guiding Light" is the longest running soap opera and the fifth-longest running program in all of broadcast history; only the American country music radio program "Grand Ole Opry" (first broadcast in 1925), the BBC religious program "The Daily Service" (1928), the CBS religious program "Music and the Spoken Word" (1929), and the Norwegian children's radio program "Lørdagsbarnetimen" (first aired in 1924, cancelled in 2010) have been on the air longer.
Marina Cooper is a fictional character on the popular CBS daytime soap opera, "Guiding Light".
 The character is the only child of police chief, Frank Cooper, and ex-wife, Eleni Andros and was born on-screen on May 8, 1993.
 In December 2001, her birth year was SORASed to the early 1980s.
 The character has been portrayed by six different actresses with Mandy Bruno currently playing the role on "Guiding Light" since May 24, 2004.
Kimberly Jo "Kim" Zimmer (born February 2, 1955) is an American actress, best known for her television roles as Echo DiSavoy on "One Life to Live" and as Reva Shayne on "Guiding Light".
 She has won four Daytime Emmy Award for Outstanding Lead Actress in a Drama Series for the role in "Guiding Light".
Rita Stapleton Bauer is a fictional character from the CBS soap "Guiding Light".
 The character was played by Lenore Kasdorf, and was created by Bridget and Jerome Dobson, shortly after they became "Guiding Light's" head writers in 1975.
 Rita was written out in 1981, when Kasdorf announced she was leaving the show.
 She had been so popular in the role, producers decided against recasting.
Michael Conforti is an American television writer on the ABC Daytime soap opera General Hospital.
 He played Jeremy Rhodes on "Edge of Night", and Wally Bacon on "Guiding Light".
 Conforti later became a writer for the soap opera "Guiding Light".
 He became a Co-Head Writer for "All My Children" and "Guiding Light".
Katherine Virginia "Kassie" DePaiva (née Wesley; born March 21, 1961) is an American actress and singer.
 She is best known for her work in American daytime soap operas.
 She is perhaps best known for her portrayal of Blair Cramer on ABC's "One Life to Live".
 Other roles included Chelsea Reardon on "Guiding Light", and her current role as Eve Donovan on NBC's "Days of Our Lives".
Hilary Edson (born October 17, 1965) is an actress who has appeared in several daytime television soap operas. From 1984 to 1987, she played Tania Roskov Jones on "General Hospital".
 She then portrayed Stacey Winthrop on "Another World" from 1989 to 1991.
 She began a three year stint on "The Guiding Light" in 1992 as Eve Guthrie.
 (Before that she appeared on "The Guiding Light" as the character of Tanya in 1984 and would be replaced in that role by later fellow "The Guiding Light" actress, Fiona Hutchison.)
 For this role, she was nominated for a Daytime Emmy Award for Best Supporting Actress in 1994.
Thomas Todd Manning and Blair Cramer Manning are fictional characters and a supercouple from the ABC daytime drama "One Life to Live".
 In 2012, they also appeared together on "General Hospital".
 Todd was originated by Roger Howarth and later portrayed by actor Trevor St. John.
 On August 17, 2011, St. John's character was revealed to be Todd's identical twin brother, Victor Lord Jr., conditioned to believe he was Todd and assume Todd's identity.
 Blair has been portrayed by Kassie DePaiva since the couple's inception.
Annie Dutton is a fictional character in the CBS soap opera "Guiding Light".
 Cynthia Watros is the actress most closely identified with the role; she played Annie from November 29, 1994, until February 23, 1998.
 The role was later recast, after Watros left for other career ventures, with Signy Coleman, who portrayed Annie from July 30, 1998 until July 20, 1999.
 Coleman also briefly reprised the role from January 14 to 21, 2003.
 Annie is often considered one of "Guiding Light's" greatest villains and one of its more exciting characters.
 Annie has also been the main rival to "Guiding Light" heroine Reva Shayne.
 The two have long fought over the affections of Reva's then-husband, Josh Lewis.
Donald Bruce Stewart (November 14, 1935January 9, 2006) was an American actor best known for his long-running role as attorney Mike Bauer on "Guiding Light".
 Stewart appeared on "Guiding Light" from 1968 to 1984, with a brief return appearance in 1997.

Question: Whos starred in Guiding Light and was the character Blair in One Lif to Live?
Answer: Kassie DePaiva