James Crown, a scion of a rich Chicago household who held essential positions in companies as numerous as Normal Dynamics, Sara Lee and JPMorgan Chase, and who turned a vital early supporter of an up-and-coming politician named Barack Obama, died in Woody Creek, Colo., on Sunday, his seventieth birthday.

Mr. Crown’s household stated in a press release that he died in a single-car accident on the Aspen Motorsports Park racetrack. The assertion offered no additional particulars about how he died.

Mr. Crown was the chief govt of Henry Crown & Firm, the household’s privately owned funding agency. The corporate is known as for his grandfather, the son of a Lithuanian sweatshop employee, who constructed a household concern that offered sand, gravel, lime and coal right into a Chicago enterprise empire price billions.

James Crown was additionally the lead director and a significant shareholder of the protection and aerospace firm Normal Dynamics; a former chairman of Sara Lee who helped the corporate break up into beverage and meals divisions; and a board member of JPMorgan.

An avid philanthropist, Mr. Crown met Mr. Obama in 2003, when he was making ready to run for the U.S. Senate in Illinois, and have become an enthusiastic supporter.

Mr. Obama had been trounced in a 2000 congressional race in opposition to the Democratic incumbent. His advisers stated he wanted a better connection to Chicago’s Jewish voters. In addition they stated he wanted cash, Mr. Crown offered each.

“I used to be simply taken along with his sensibility, his intelligence, his values and the way he carried out himself throughout that marketing campaign,” Mr. Crown instructed The New York Occasions in 2007.

Mr. Crown and his household donated a complete of $112,500 to Mr. Obama in the course of the Democratic main, and Chicago’s Jewish leaders raised lots of of hundreds extra in the course of the marketing campaign. Mr. Obama gained the first, then defeated Alan Keyes for the Senate seat and started the nationwide political profession that may take him to the White Home.

Just a few years later, Mr. Crown turned Mr. Obama’s chief presidential fund-raiser in Illinois. When Mr. Obama ran for president in 2008, he launched an inventory of earmarks he had secured as a senator, together with $750,000 to assist renovate an area heart named after Henry Crown on the Museum of Science and Trade in Chicago.

In 2014, Mr. Obama appointed Mr. Crown to the president’s Intelligence Advisory Board, an unbiased group that advises the president on the effectiveness and objectives of U.S. intelligence businesses.

“When Barack was nonetheless an unlikely candidate operating for the U.S. Senate, Jim turned considered one of his fiercest advocates and most perceptive advisers,” Mr. Obama and his spouse, Michelle, stated in a assertion on Monday. “He believed in our household, and labored onerous to persuade others throughout Chicago that they may, too.”

One other beneficiary of Mr. Crown’s largess was the College of Chicago, the place he served as chairman of the board of trustees from 2003 till 2009. The college named its social companies college the Crown Household College of Social Work, Coverage and Apply after Mr. Crown and his spouse, Paula, donated $75 million in 2021.

After Mr. Obama left the White Home, Mr. Crown continued to mingle with world leaders, together with President Biden, whom he noticed final week at a state dinner for Prime Minister Narendra Modi of India.

“Jim lived an amazing Chicago story — one which tied our nation’s industrious previous to an ever-hopeful future,” Mr. Biden stated in a assertion. “He grew up the great-grandson of a sweatshop employee whose son turned a construction-supply firm into an empire. All through his personal profession as a enterprise and civic chief, Jim continued to drive that legacy ahead.”

Mr. Crown was a director of Financial institution One, a client banking big within the Midwest and South, from 1991 till 2004, when JPMorgan acquired it in a deal valued at about $58 billion. He stayed on as a board member after the merger.

Jamie Dimon, JPMorgan’s chairman and chief govt, wrote in a press release that Mr. Crown “has been a trusted adviser for me for practically 20 years, taking part in a key position in serving to our firm navigate quite a few enterprise and financial challenges.”

Mr. Crown and two different boardmembers, David Cote and Ellen Futter, drew criticism in 2013 after JPMorgan misplaced greater than $6 billion in a guess on credit score derivatives. The loss drew scrutiny from federal regulators, calls for for extra strong danger administration and intense criticism of Mr. Dimon.

James Schine Crown was born in Chicago on June 25, 1953, to Lester and Renée (Schine) Crown. His mom additionally comes from a rich household — her father, J. Myer Schine, made a fortune in actual property and lodges — and she or he serves as a director of the Nationwide A number of Sclerosis Society and created an honors program at Syracuse College.

Lester Crown was for a few years the main shareholder of Normal Dynamics. He additionally turned a minority proprietor of the Chicago Bulls and the New York Yankees.

The Crown household fortune started with Henry Crown, James’s grandfather, born Henry Krinsky, whose father modified the household identify to Crown when Henry was a boy. Henry left college within the eighth grade and, along with his brother, finally began the household building supplies enterprise, which he expanded into railroads, meat packing, lodges and, for a time, a significant curiosity within the Empire State Constructing.

In 2020, Forbes journal ranked the Crown household the Thirty fourth-richest in america, with an estimated price of $10.2 billion.

James Crown graduated in 1972 from New Trier West Excessive College in Northfield, Ailing. (now a part of New Trier Excessive College). He earned a bachelor’s diploma in political science from Hampshire Faculty in Amherst, Mass., in 1976. After finishing a regulation diploma at Stanford, he started working for Salomon Brothers, the New York Metropolis funding financial institution.

In 1983, he turned a vice chairman at Salomon, the place he met Paula Hannaway, an funding banker. They married in 1985 and moved to Chicago, the place Mr. Crown joined his household’s funding agency.

Along with his spouse and his dad and mom, Mr. Crown is survived by two brothers, Steve and Daniel; 4 sisters, Patricia (referred to as PC), Susan, Sara and Janet Crown; three daughters, Torie, Hayley and Summer season Crown; a son, W. Andrew Crown; and two grandsons.

Mr. Crown, who stored a house in Aspen, was additionally an avid skier and a managing companion of the Aspen Snowboarding Firm, which operates a resort.

The household assertion didn’t say what Mr. Crown was doing at Aspen Motorsports Park when the accident occurred. The park’s web site says that members collect twice per week to race, usually a qualifying session adopted by two races with “fast-paced, wheel-to-wheel motion” in “Spec Racer Toyotas.”

The racetrack didn’t reply to telephone calls or an e-mail.

Mr. Crown just lately started an effort to deal with gun violence in Chicago by encouraging the town’s enterprise leaders to create hundreds of jobs in underserved areas of the town, offering hundreds of thousands of {dollars} for civilian violence intervention applications and shoring up regulation enforcement and low-income communities.

He stated that the trouble would assist Chicago’s higher crust in addition to its lower-income residents.

“You’ve obtained altruism,” Mr. Crown instructed The Chicago Solar-Occasions. “However you’ve additionally obtained the enlightened self-interest of: I wish to be protected, I need my employees to return to work, I need the vacationers to patronize my enterprise, no matter that could be.”

Emily Flitter contributed reporting.