In November 1823, both Ann Van Ness Middleton and her baby daughter of one day died. Her parents commissioned George Hadfield to design a mausoleum. The mausoleum was originally built around 1825 to 1826 in the Burnes graveyard on H Street Northwest between 9th and 10th Streets. It was built of Aquia stone, a circular classical temple with baseless Greek Doric columns and a stepped dome, inspired by the Romantic Classical Revival movement. It was later disassembled and moved in 1872 to a new location at Oak Hill Cemetery. - The National Portrait Gallery of Distinguished Americans