Peter A. B. Widener died at Lynnewood Hall at the age of 80 on November 6, 1915, after prolonged poor health. He was predeceased by his elder son George Dunton Widener and grandson Harry Elkins Widener, both of whom died when RMS "Titanic" sank in 1912. The structure changed hands a few times over the subsequent decades, with large portions of the estate grounds sold off in the 1940s, and has been predominantly vacant since 1952, when it was purchased by a religious group that started selling off the interior detailing.