|Parents||Alice Grantham, Gavin Grantham|
|Siblings||Sophie Grantham , Unborn baby Grantham|
|Hair color||Light Brown|
|Game||The Sims 3 Store|
Katherine Grantham is a Sim who lives in Sunlit Tides. She lives with her parents, Alice and Gavin Grantham, and her older sister, Sophie Grantham. When the game starts, her mother is pregnant with her third child.
Katherine has the charismatic trait despite the fact that it is only available for teens and up. A similar thing happens her older sister, who has the Childish trait despite being a child, and Robbie Platt of Starlight Shores, who has the Natural Born Performer trait.