Who is Leslie Knipfing? Everything About Kevin James’ Sister

Leslie Knipfing is the sister of Kevin James, the popular Hollywood actor and comedian. She was born on November 17, 1974, and is 49 years old. She’s a charity manager.

Other than Kevin James, Leslie has another brother, Gary Valentine, who is also an actor. Leslie has earned recognition since her brothers have successfully carved out a space for themselves in show business.

Summary of Leslie Knipfing’s Bio 

  • Full name: Leslie Knipfing
  • Gender: Female
  • Date of birth: November 17, 1974
  • Leslie Knipfing’s Age: 49 years old
  • Ethnicity: Caucasian and German
  • Nationality: American
  • Zodiac Sign: Scorpio
  • Sexual Orientation: Straight
  • Religion: Christianity
  • Marital Status: Single
  • Leslie Knipfing’s Parents: Joseph Valentine Knipfing and Janet Knipfing
  • Siblings: Kevin James and Gary Valentine
  • Leslie Knipfing’s Height in Inches: 5 feet 10 inches
  • Leslie Knipfing’s Height in Centimetres: 178 cm
  • Leslie Knipfing’s Weight: 65 kg
  • Famous for: Being the sister of the popular Hollywood actor and comedian, Kevin James

Leslie Knipfing was Born in Mineola, New York in 1974

Leslie Knipfing was born on November 17, 1974, in Mineola, New York, United States of America. Shortly after her birth, her family relocated to Stony Brook, Long Island, the United States, where she was raised alongside her brothers. The celebrity sister is of Caucasian and German ancestry, while she is an American citizen by birth.

She was born to Joseph Valentine Knipfing, an insurance agent, who passed away in 2006 at the age of 75 after battling heart disease. Her mother, Janet Knipfing, is a chiropractor. Leslie Knipfing is the youngest of three children born to her parents. Though she grew up with her siblings, her eye defect made her childhood less fun.

There are no details of her education, but considering her eye defect, she must have attended a special school for children with special needs. Moreover, it is unknown if she earned a degree because the information about the university she attended and her course of study has been kept private.

Is Leslie Knipfing Blind?

Leslie Knipfing is not blind, rather, she is suffering from a genetic eye defect known as retinitis pigmentosa. This is a group of rare eye defects that affect the retina. She was negatively affected by the eye defect because it limited her from taking part in many activities from childhood to adulthood.

It also prevented her from joining showbiz like her brothers, who have made names for themselves in it. Nevertheless, she turned her limitations for good and started taking part in the work of the charity to encourage those with the same eye defect and support them.

She Manages The JVK Foundation

Leslie Knipfing is a charity event manager for the JVK Foundation, owned by Kevin James. The celebrity sister raises money for the foundation by organizing charity events. Since she suffered from a genetic eye defect in childhood, Leslie was inspired to go into the work of philanthropy.

The foundation was founded in Los Angeles, California, in 2006. Leslie, Gary, Kevin, and their mother are all trustees and also have controlling power over the foundation. All her family members are focused on a specified sector. Leslie Knipfing is focused on exposing people to know about retinitis pigmentosa alongside her brother Kevin.

Together, they have supported Steven and Alexandra Cohen Children’s Medical Center, Columbia University Medical School, New York Presbyterian Hospital, and many more.

A Look Into the Personal Life of Kevin James’ Sister

Despite having brothers who are top shots in the American entertainment industry, Leslie Knipfing keeps details about herself away from the prying eyes of the media. There are no details on if she is married or in a relationship that is known to the public.

Based on the fact that she is not active on any social media platform, she has not been spotted with anyone who seems like her lover. She might be in a secret relationship and has chosen not to make it public. Her family members have also helped in shielding her details from the public.

However, it is believed that with time, she will reveal who the lucky man is. There are also no details about who she has been linked to in the past.

Leslie Knipfing Shares a Close Bond With Her Brothers

Leslie Knipfing is the youngest child born to her parents. She has two older brothers who are in showbiz. Here is a glimpse at her brothers and how close they are:

Gary Valentine

  • Date of Birth: November 22, 1961
  • Age: 62 years old
  • Occupation: Actor, comedian, and writer

Gary Joseph Knipfing, who is well-known by his stage name Gary Valentine, is an American writer, actor, and comedian born on November 22, 1961, in Mineola, New York. He is the oldest brother of Leslie Knipfing. Gary started his career in the entertainment industry as a comedian. The actor later began handling talk shows like Late Night With Conan O’Brien, The Tonight Show With Jay Leno, and many more.

He later started his own half-hour special on Comedy Central. Gary has starred in many films, like Home Team, Paul Blart: Mall Cop 2, The Dog Who Saved Summer, The Dog Who Saved the Holidays, and many more. The actor also has also appeared in some television shows such as Kevin Can Wait, Fargo, Men of A Certain Age, and others.

Gary Valentine got married to Jackyline Knipfing in 1993 and has not welcomed any children. He shares a close relationship with his sister, Leslie, and other family members.

Kevin James

  • Date of Birth: April 26, 1965
  • Age: 59 years old
  • Occupation: Comedian, actor, screenwriter

Kevin James, whose real name is Kevin George Knipfing, is the older brother of the charity event manager. He was born on April 26, 1965, in Mineola, New York. The actor is well known for his role in the comedy series, The Kings of Queens. Just like his older brother, he started his career in showbiz as a stand-up comedian.

Currently, he has over twenty films to his name, including Home Team, Hubie Halloween, Becky, and many more. He has also appeared in TV shows like Liv and Maddie, The Crew, Kevin Can Wait, and many others. He got married to Steffiana De La Cruz in 2011 and has welcomed four children with her.

Kevin is very close to his sister and the rest of the family. According to him, Leslie always assists him in organizing his daily activities. The actor on his path has always given her some accolades and is grateful for the way she handles his daily schedule.


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