The Life of Gwendolyn Sontheim Meyer

Gwendolyn Sontheim Meyer is an American billionaire heiress and equestrian. She is a descendant of William W. Cargill, the founder of the multinational corporation Cargill. Meyer inherited an estimated 8% stake in the company, making her one of the wealthiest women in the world.

Early Life and Family

Gwendolyn Sontheim Meyer was born in 1961 to Marion MacMillan Pictet and John H. MacMillan Jr. She is an only child and was raised in Switzerland until she moved to the United States to attend boarding school. Meyer graduated from Menlo College and San Diego State University.

Career Highlights

Meyer’s primary career focus has been on equestrian pursuits. She is a skilled show jumper and has competed in numerous competitions around the world. Meyer has also been involved in the breeding and training of show horses.

Net Worth

Meyer’s estimated net worth is $5.5 billion. She is one of the wealthiest women in the United States.

Social Media Presence

Meyer is not active on social media.

Personal Life

Meyer is divorced and has two children. She lives on a ranch in Rancho Santa Fe, California.

Hobbies and Interests

Meyer’s hobbies include equestrianism, travel, and philanthropy.

Charitable Work

Meyer is a supporter of several charitable organizations, including the Rancho Santa Fe Foundation and the San Diego Foundation.


Meyer attended Dana Hall, a boarding school for girls in Wellesley, Massachusetts. She graduated from Menlo College and San Diego State University.

Early Career

Meyer began her career as a professional show jumper in the early 1980s. She quickly rose to the top of the sport and competed in numerous international competitions.

Upcoming Projects

Meyer is currently training several young show horses that she hopes to compete with in the future.

Style and Fashion

Meyer has a classic and elegant style. She is often seen wearing tailored suits, dresses, and skirts.

Fan Base

Meyer has a small but devoted fan base. She is known for her kindness and generosity.

Political or Social Activism

Meyer is not actively involved in politics or social activism.


  • Meyer is fluent in English, French, and German.
  • She is a member of the United States Equestrian Federation.
  • She is a patron of the San Diego Opera.

Gwendolyn Sontheim Meyer is a remarkable woman who has achieved great success in both her personal and professional life. She is a talented equestrian, a generous philanthropist, and a devoted mother. Meyer is an inspiration to women around the world.