York was the eldest son of Captain Edward York and his wife, Violet Helen née Milner, daughter of Sir Frederick Milner, 7th Baronet.
On 19 April 1911 he married Doreen Maud Milner (1886–1965), the younger daughter of Sir Frederick Milner.
Sir | Sir Walter Scott | Frederick the Great | baronet | Baronet | Frederick | 7th United States Congress | Frederick II | Frederick II, Holy Roman Emperor | Frederick Russell Burnham | Frederick Roberts, 1st Earl Roberts | Frederick Law Olmsted | Sir Arthur Conan Doyle | Frederick I, Holy Roman Emperor | Frederick Forsyth | Frederick Douglass | Frederick, Maryland | Sir Robert Peel | Prince Frederick, Duke of York and Albany | Frederick III | Frederick I | Frederick Delius | Frederick William III of Prussia | John Frederick II, Duke of Saxony | Frederick III, German Emperor | Frederick William IV of Prussia | Frederick Schomberg, 1st Duke of Schomberg | Frederick I, Margrave of Brandenburg-Ansbach | Frederick III, Holy Roman Emperor | Sir Arthur Harris, 1st Baronet |
He was married in 1880 to Adeline Gertrude Denison, the daughter of William Beckett-Denison, and had one son, William Frederick Victor Mordaunt Milner.