ROBERTS, Frederick Sleigh, 1st Earl, letters, autographs, documents, manuscripts Home | Archive | Facsimiles | Forgeries | Back ROBERTS, Frederick Sleigh, 1st Earl (1832-1914). Field Marshal. Postcard-sized photograph signed ('Roberts. FM'), showing him seated at his desk, pen in hand. [No: 19831] This is the archived description of an item that has already been sold. Please contact me if you would like any further intormation.