The daughter of Henry Howard; in 1788 she became the second wife of the ninth baron Petre.

REFERENCES TO Lady Juliana Barbara Petre [née Howard]:

Thomas Creevey to Elizabeth Ord, 28 September 1827 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)