Sir Arthur Monck, 7th Baronet
Sir Arthur Edward Middleton, M.P., 7th Baronet was a British MP.
He was born Arthur Edward Monck, the son of Charles Atticus Monck of Belsay Castle, Northumberland, by his wife Laura, daughter of Sir Mathew White Ridley 3rd Bt., M.P., of Blagdon Hall, Northumberland. He succeeded to the Baronetcy of Belsay Castle on the death of his grandfather in 1867. His grandfather had changed his name from Middleton to Monck in 1799, and in 1876 the 7th Baronet and his brothers changed their name from Monck back to Middleton.
He was elected as a Liberal Party Member of Parliament for the City of Durham at a by-election in 1874, after the 1874 general election in Durham had been voided on petition. He retired from the House of Commons at the 1880 general election. He served as High Sheriff of Northumberland for 1884.
He married, in 1871, Lady Constance Harriet Amherst, daughter of William Amherst, 2nd Earl Amherst. Middleton outlived his eldest son Gilbert and was succeeded by his son Sir Charles Middleton, 8th Baronet. He was the author of An Account of Belsay Castle in the County of Northumberland, published in 1910, and of Sir Gilbert de Middleton and the Part he took in the Rebellion of the North in 1317, published in 1918.
