Short answers, pulled from the story.
Katharine Hepburn won four Academy Awards for Best Actress, a record among all performers. Her wins came for Morning Glory (1933), Guess Who's Coming to Dinner (1967), The Lion in Winter (1968), and On Golden Pond (1981).
Katharine Hepburn was born on the 12th of May 1907, in Hartford, Connecticut. She died on the 29th of June 2003, at the age of 96, at the Hepburn family home in Fenwick, Connecticut, from cardiac arrest.
Spencer Tracy was Hepburn's co-star in nine films and her partner for 26 years, from 1941 until his death on the 10th of June 1967. Their relationship was largely hidden from the public because Tracy remained married throughout. Hepburn was with him when he died and did not attend his funeral out of consideration for his family.
After a string of commercially unsuccessful films in the mid-to-late 1930s, the Independent Theatre Owners of America included Hepburn on a list of actors considered "box office poison." Bringing Up Baby (1938) was critically praised but failed at the box office, and she had also made several other pictures in a row that lost money.
Hepburn left Hollywood to star in Philip Barry's stage play The Philadelphia Story, which was tailored specifically to showcase her. Howard Hughes bought her the film rights before the play even debuted. She then sold those rights to MGM on the condition that she star in the film, and she also secured her choice of director and co-stars. The 1940 film was one of the biggest hits of the year, breaking records at Radio City Music Hall.
Katharine Hepburn won her only Emmy Award for the 1975 television movie Love Among the Ruins, a London-based Edwardian drama in which she starred alongside Laurence Olivier.