Katharine completed her primary level education from the "Las Lomas High School". After studying a year at "Santa Rosa Junior College", Ross moved to San Francisco to study acting. Thus, Katharine joined The Actors Workshop, one of the Southern California's oldest film acting programs.
After a hard work and passion for acting, Katharine got a chance to entered into the film industry through the American legal drama television series, Sam Benedict, as Teresa Parelli at the age of 22.
Likewise, Katharine made her movie debut through the 1965 hit movie, Shenandoah as a role of Ann. However, she got her breakthrough from the American comedy-drama film, The Graduate as Elaine Robison. To this date, her role was one of the noticeable in her life. From this movie, Ross won the "Gloden Globe Award' for new star of the year. As well as nominated for Academy Award and BAFTA Film Award.
Following this, Ross appeared in numerous movies and television series. Some of her hit movies, The Graduate, Butch Cassidy and the Sundance Kid, The Stepfirs Wives and so on.
On the another hand, Ross is a famous author. She has released several books including, The little quiet book, The baby animal's party, The Story of the Pilgrims and much more.
In concern to Ross's personal life, Ross belongs to the white ethnicity and holds an American nationality. Ross is a married woman. Firstly she married to her long-term boyfriend, Joel Fabiani, an American actor. The couple married on February 28, 1960, after dating a couple of years. Even though Ross and Joel married life was going good, later after some relationship issues they finalized divorce in 1962.
Then, Ross married to her ex-husband, John Marion on May 2, 1964. After spending three years sadly their relationship turned into divorced in 1967 without any children.
After that, Ross married to Conrad L. Hall. Their relationship was going perfectly. However, the couple got divorced without having any child.
The next person in the list of her husband was, Gaetano Lisi, an actor. The couple married after dating a couple of years. The couple was very happy in the beginning of their love life. Sadly their beautiful relationship turned into a divorce after spending five years together.
Currently, Ross is happy with her fifth husband, Sam Elliott. After marriage, the couple blessed with a daughter, Cleo Cole Elliott. The husband and wife are living a happy life without any rumors of divorce or separation.
Ross is one of the successful actresses from the United State. She has able to collect a huge amount of money from her profession as a Hollywood actress. As of 2017, her net worth is estimated to be around $5 million dollars. C
Currently, she is one of the highest paid actresses in the Hollywood Thus, Ross lives lavish and luxurious days with her husband and children in Hollywood, California.