Arthur Nicolson, 1st Baron Carnock diplomat and politician from United Kingdom (1849-1928) (1849–1928) Parents Mary Clementina Marian Loch Sir Frederick William Erskine Nicolson, 10th Baronet Children Erskine Nicolson, 3rd Baron Carnock Harold Nicolson Frederick Nicolson, 2nd Baron Carnock Clementina Nicolson Siblings Frederick Nicolson Clementina Ann Eleanor Nicolson Frances Nicolson Amy Nicolson Partners Mary Rowan-Hamilton