Kimberly Guilfoyle lost her mother to Leukemia when she was eleven. In 2008, she had to suffer the loss of her father. In her 2015 book, Making the Case: How to Advocate for Yourself in Work and Life, Kimberly recalls how her tough childhood shaped her into the person she has become. She remarked in the book that a case could be made “for virtually everything else in life”.
And by cases, she meant negotiations at workplace, expression of feelings towards loved ones and so on. She gave an incredible advice to her readers: “...Value your voice and advocate for yourself. Make the case for your career, your relationships, your health, and crucially, for those who are not able to advocate for themselves.”
Kimberly is a two times divorcee. She married the former Mayor of San Francisco, Gavin Newsom, in 2001. Newsom was a close friend of her father's. Gavin was elected the Mayor of San Francisco in 2003 and Kimberly served as the First Lady of San Francisco from January 8, 2004, to February 26, 2006. They separated on February 28, 2006.
Three months after her first divorce, Kimberly married Eric Villency. Eric is the CEO of an interior and product design firm. The couple seemed to be doing fine until it came to light that they had parted ways in 2009. Kimberly has a son, Ronan Anthony, with Eric.