Arthur Hay, 9th Marquess of Tweeddale

Colonel Arthur Hay, 9th Marquess of Tweeddale FRS FRSE FZS (9 November 1824 – 29 December 1878), known before 1862 as Lord Arthur Hay and between 1862 and 1876 as Viscount Walden, was a Scottish soldier and ornithologist.

Arthur Hay, 9th Marquess of Tweeddale

Colonel Arthur Hay, 9th Marquess of Tweeddale FRS FRSE FZS (9 November 1824 – 29 December 1878), known before 1862 as Lord Arthur Hay and between 1862 and 1876 as Viscount Walden, was a Scottish soldier and ornithologist.