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Katherine "Kay" Shepard (formerly Kay Reynolds, Kay Chancellor, Kay Thurston, Kay Sterling) is a character on The Young and the Restless.
Kay is one of the only two original characters remaining from the show's early years (along with Jill Foster Abbott). Although she was not on the show when it debuted, actress Jeanne Cooper has portrayed the role since 1973, making her the show's longest-serving cast member.
* Gary Reynolds (Divorced) 
* Phillip Chancellor II (Dissolved) [1974-1976)
* Derek Thurston (Divorced) [1977-1981]
* Rex Sterling (Annulled) [1988-1990]
* Rex Sterling (Dissolved) [1992-1994]
* Brock Reynolds (Son, with Gary Reynolds)
* Jill Foster (Daughter, with Arthur Hendricks, Given Up For Adoption)
* Ethan "Cane" Ashby (Grandson, via Jill)
* Phillip Chancellor III (Legal Grandson, via Jill, deceased)
* William "Billy" Abbott (Grandson, via Jill)
* Mackenzie Browning (Granddaughter, via Brock)
* Phillip Chancellor IV (Legal Great-Grandson, via Phillip)