Overview

John Marks "Jack" Templeton Jr. (February 19, 1940 – May 16, 2015) was an American medical doctor and pediatric surgeon who served for many years as Chairman and President of the John Templeton Foundation. He combined a clinical career in pediatrics with leadership of a high-profile philanthropic organization, and was active in Republican politics as a Republican.

Early life and education

Templeton was born in New York City and was the elder son of Judith (Folk) Templeton and his father, Sir John Templeton, a well-known investor and philanthropist. He completed undergraduate study at Yale University in New Haven, Connecticut, and trained in medicine at Harvard Medical School. His education combined a classical liberal arts background with professional medical training.

Medical career

Professionally, Templeton worked as a pediatric surgeon. His medical work was rooted in clinical practice caring for children and in applying surgical skills appropriate to pediatric medicine. Throughout his life he maintained ties to physicians and medical institutions while balancing responsibilities at the family foundation.

Philanthropy and public positions

As head of the John Templeton Foundation, Templeton directed grantmaking in areas that often aimed to explore questions at the intersection of science, philosophy and religion. Under his leadership the foundation supported scholarly research, public engagement initiatives, and projects that encouraged dialogue between scientific and spiritual perspectives. Templeton himself identified as an Evangelical, and his charitable giving extended beyond academic causes into civic and political spheres.

Political activity and controversies

Templeton was known for donating to conservative organizations and causes. He gave to groups that opposed legal recognition of same-sex marriage and supported public-policy initiatives aligned with conservative social values. These activities generated discussion about the role of philanthropy in contentious public debates and about the relationship between private giving and public policy.

Personal life and legacy

Templeton was married to Josephine and they had three daughters. In his later years he lived outside of the public eye while overseeing the foundation and remaining involved in medical and faith communities. He died from brain cancer on May 16, 2015 in Bryn Mawr, Pennsylvania. His legacy is often discussed in two areas: the continuation of his father’s philanthropic enterprise through the foundation, and the intersection of medical professionalism, religious conviction, and politically engaged giving.

  • Roles: clinical pediatric surgeon; foundation chairman and president.
  • Interests: medical care for children, research funding, science–religion dialogue.
  • Notable facts: son of Sir John Templeton; active in conservative political philanthropy.