John Donald MacArthur (March 6, 1897 – January 6, 1978) was an American insurance magnate, real estate investor and philanthropist who established the John D. and Catherine T. MacArthur Foundation, benefactor in the MacArthur Fellowships.

John Donald MacArthur (1897-1978) was one of the three wealthiest men in America at the time of his death, and was sole owner of the nation's largest privately held insurance company. One of seven children, Mr. MacArthur was born in an impoverished …

In addition to selecting the MacArthur Fellows, we work to defend human rights, advance global conservation and security, make cities better places, and understand how technology is affecting children and society.

Jan 7, 1978 · John D.MacArthur, the Florida insurance magnate and real estate billionaire, died of cancer early yesterday at Good Samaritan Hospital in West Palm Beach; Fla.He was 80 years old.

Dec 11, 2015 · MacArthur sued to dissolve Lake Park, forcing a settlement that gave him what he wanted: control of the water supply. John D. MacArthur had come to town, and town would never be the same.

Mar 6, 2018 · When he died in 1978, he left over $1 billion in assets to the John D. and Catherine T. MacArthur Foundation. John MacArthur rose from humble means to become one of the richest men in America. Born on March 6, 1897, in Pennsylvania, he was the son of an itinerant Baptist preacher and missionary.

The John D. and Catherine T. MacArthur Foundation is a private foundation that makes grants and impact investments to support non-profit organizations in approximately 117 countries around the world. It has an endowment of $7.6 billion and provides approximately $260 million annually in grants and impact investments.

…established in 1970 by philanthropists John and Catherine MacArthur. The MacArthur Foundation’s mission is to “support creative people and effective institutions committed to building a more just, verdant, and peaceful world.”

The John D. and Catherine T. MacArthur Foundation is a private, independent grantmaking institution dedicated to helping groups and individuals foster lasting improvement in the human condition.

John D. MacArthur was born in Pittston, Pennsylvania in 1897 to Baptist parents, and was the youngest of seven children. Despite growing up in an impoverished family, MacArthur would become a hugely successful businessman and well-known philanthropist.