The Kings Room and dressing room next door formed the first floor of part of the original 12th century castle.
In 1566 Mary Queen of Scots visited Sir John Stuart, who was 4th laird of Traquair and captain of her bodyguard, with her husband Lord Darnley and infant son James (later King James VI) whose wooden cradle you can see at the end of the bed.
The state bed, which is 16th century, was brought from Terregles House where it was used by Mary when she stayed there.