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STOCKHOLM — Ingvar Kamprad, the IKEA founder who turned a small-scale mail order business into a global furniture empire, has died at 91, the company said Sunday.

IKEA Sverige, the chain's Swedish unit, said on Twitter that Kamprad died Saturday at his home in Smaland, southern Sweden. Later it said he died peacefully following a short illness.

"He will be much missed and warmly remembered by his family and IKEA staff all around the world," the company said.

Jesper Brodin, CEO and president of the IKEA Group, said Kamprad's "legacy will be admired for many years to come and his vision — to create a better everyday life for many people — will continue to guide and inspire us."

Kamprad's life story is intimately linked to the company he founded at age 17 on the family farm.

His work ethic, frugality and down-to-earth style remain at the core of its corporate identity today. But his missteps in life, including early flirtations with Nazism, never rubbed off on IKEA, one of the world's most recognizable brands.

Kamprad formed the company's name from his own initials and the first letters of the family farm, Elmtaryd, and the parish of Agunnaryd where it is located. It's in the heart of Småland, a forested province whose people are known in Sweden for their thrift and ingenuity. Kamprad possessed both.

Ingvar Kamprad, founder of Swedish multinational furniture retailer IKEA, in Agunnaryd, Sweden on Dec. 10, 2005. Hans Runesson /TT / EPA

Later in life, his name often appeared on lists of the world's richest men, but he never adopted the aura of a tycoon. He drove a modest Volvo and dressed unassumingly. In a 1998 book that he co-authored about IKEA's history, he described his habit of visiting vegetable street markets right before they closed for the day, hoping to get a better price.

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Born on March 30, 1926, Kamprad was a precocious entrepreneur who sold matchboxes to neighbors from his bicycle. He found that he could buy them in bulk very cheaply from Stockholm, and sell them at a low price but still make a good profit. From matches, he expanded to selling fish, Christmas tree decorations, seeds and later ballpoint pens and pencils.

Kamprad soon moved away from making individual sales calls and began advertising in local newspapers and operating a makeshift mail-order catalog. He distributed his products via the local milk van, which delivered them to the nearby train station.

In 1950, Kamprad introduced furniture into his catalog, pieces that were produced by local manufacturers in the forests close to his home. After the positive response he received, he soon decided to discontinue all other products and focus just on low-priced furniture.

Related: Vintage Ikea Furniture Selling for Thousands

Since then the IKEA concept — keeping prices low by letting the customers assemble the furniture themselves — offers affordable home furnishings at stores across the globe.

The founder of IKEA and one of the greatest entrepreneurs of the 20th century, Ingvar Kamprad, has passed away at the age of 91. Read more in our newsroom: https://t.co/7jGPwWt6Es pic.twitter.com/SdPTkuOu9w — IKEA USA (@IKEAUSA) January 28, 2018

In 1994, Swedish newspaper Expressen reported that Kamprad had contacts with Swedish fascist leader Per Engdahl in the 1940s and '50s. In a letter to IKEA employees, Kamprad admitted that he once had sympathies for the far-right leader and called it "a part of my life which I bitterly regret."

In the 1998 book, he gave more details about his youthful "delusions," saying he had been influenced as child by his German grandmother's strong support for Hitler. His paternal grandparents emigrated to Sweden in the 1890s.

"Now I have told all I can," he said at a book release ceremony at an IKEA store in suburban Stockholm. "Can one ever get forgiveness for such stupidity?"

The book also contained details about his struggles with alcohol and his successes and failures in business.

IKEA celebrates its Swedish heritage: the company's stores are painted blue and yellow like the Swedish flag and serve meatballs and other traditional Swedish food. But Kamprad's relationship with his homeland was sometimes complicated.

Related: Soon You May Get Your Ikea Meatball Fix Without Going to a Store

He moved to Switzerland in the late 1970s to avoid paying Swedish taxes, which at the time were the highest in the world. He decided to return home only after his second wife Margaretha died in 2011.

The estate inventory filed to Swedish tax authorities in 2013 confirmed that the couple lived comfortably but hardly in opulence. They had two cars — a 2008 Skoda and a 1993 Volvo 240. Kamprad's personal wealth was established at 750 million kronor ($113 million), a considerable amount, but far from the multibillion-dollar sums attributed to him on world's-richest lists compiled by Forbes and others.

IKEA officials have said such lists, which compared his wealth to that of Warren Buffet or Bill Gates, erroneously considered IKEA's assets as his own. IKEA is owned by foundation that Kamprad created, whose statutes require profits to be reinvested in the company or donated to charity.

The estate inventory showed that Kamprad had donated more than $20 million to philanthropic causes in 2012 alone.

In June 2013, Kamprad announced that he would retire from the board which controls the IKEA brand as part of moves to hand responsibilities over to his son, Mathias.

Kamprad is survived by a daughter Annica from his first marriage to Kerstin Wadling and three sons — Peter, Jonas and Mathias — from his marriage to Margaretha Stennert.

Funeral arrangements were not immediately available.