Martha Stewart is mourning the death of her beloved younger brother George Christiansen, who died suddenly last week.

We’re told Christiansen, a contractor, passed away at home of a suspected heart attack after feeling unwell.

Stewart’s longtime spokeswoman Susan Magrino told Page Six, “Martha lost her youngest brother, George, suddenly and unexpectedly earlier this [past] week. The family requests that you respect their privacy during this time of sorrow.”

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We’re told that Stewart, 75, and Christiansen were very close. He lived on a Fairfield, Conn., ranch, and his wife, Rita, worked in Stewart’s office. His company, Pequot Remodeling, worked with Stewart on remodeling her former home, called Turkey Hill.

In the book “Being Martha: The Inside Story of Martha Stewart and her Amazing Life,” Christiansen said of their childhood: “It was all about going and finding a piece of land and living off of it, learning how to get back to nature. Listening to banjos, listening to folk music, discovering Leadbelly and the Mamas and the Papas. We used to have the greatest evenings with a bunch of hospitable people. Martha would make pies and other things for the occasions.”

Christiansen also appeared on Stewart’s digital show, helping her make a blueberry pie from berries grown in his yard.

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Stewart — one of six siblings — also unexpectedly lost her youngest sister Laura Kostyra Plimpton, who worked for her company for more than 25 years, in 2014. Laura, 59, suffered a massive brain aneurysm at home in Norwalk, Conn.

Stewart dedicated a Japanese maple grove at her estate to the memory of her late sister. At Laura’s memorial, Stewart read the poem “Remember Me” by Margaret Mead. The words include, “Remember me in your heart, your thoughts, your memories of the times we loved, the times we cried, the times we fought, the times we laughed. For if you always think of me, I will never be gone.”

This article originally appeared on Page Six.