"Simon Brooke Mackay, Baron Tanlaw" . . . . . . . . . . . . . . . "1934" . . . . . "1934-03-30" . "Baron Tanlaw" . "Simon Mackay, Baron Tanlaw" . "Simon Mackay, Baron Tanlaw" . . . . . . . "Simon Mackay" . "Simon Brooke Mackay" . . . . "Lord Tanlaw" . . . . . . . . . "Baron '''Tanlaw''', ''of Tanlawhill in the County of Dumfries''" .