Laura Spelman Rockefeller, wife of oil tycoon John D. Rockefeller, became known for her philanthropic activities and contributions to various charitable causes. She and her husband were prominent philanthropists, and together, they played a significant role in establishing the Rockefeller Foundation, which focused on improving public health, promoting education, and supporting scientific research. Laura Rockefeller's philanthropic work helped create a lasting legacy in the fields of education, medicine, and public health.