Middleton's father, Michael, and her paternal ancestors were from Leeds, Yorkshire. Her paternal great-grandmother, Olive, was a member of the Lupton family, who are described in the City of Leeds Archives as "landed gentry, a political and Business dynasty"; previously unpublished pictures revealed in March 2015 that Olive Middleton had grown up on her family's Potternewton Hall Estate alongside her cousin, Baroness von Schunck (née Kate Lupton). Middleton's paternal ancestors also include her great-great-grandfather, Politician Francis Martineau Lupton (1848–1921), whose first cousin, Sir Thomas Martineau, was the uncle of World War II Prime Minister Neville Chamberlain.