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Also known as: Granogue Estate, Ganogue, Irénée du Pont House

Granogue mansion, aerial view
Did you know one of the last major du Pont estates is finally becoming public? This is Granogue, on a hilltop overlooking the Brandywine River, just outside Wilmington, Delaware. The du Pont family lived there for a century until Irénée Jr. died in 2023 at age 103. Every other du Pont mansion in the Brandywine Valley has been a museum for decades. Granogue held out the longest. Longwood Gardens just bought the property and plans to open it to the public in the coming years. The Brandywine Valley has been home to four generations of American painters. Howard Pyle established the Brandywine River School here in the 1890s. His student N.C. Wyeth settled in Chadds Ford and painted the Brandywine landscapes. N.C.'s son Andrew Wyeth painted there too, and Andrew's son Jamie Wyeth still does.