Heraldry
In the Napoleonic era, the French first empire replaced the coronets of traditional ('royal') heraldry with a rigorously standardized system (as other respects of 'Napoleonic' coats of arms) of toques, reflecting the rank of the bearer. Thus a Napoleonic Duke used a toque with 7 ostrich feathers and 3 lambrequins, a Count a toque with five feathers and two lambrequins, a Baron three feathers and one lambrequin, a Knight only one ostrich feather (see Nobility of the First French Empire).
There is also an unproven theory that the design of the papal tiara would have been based on a toque.
Read more about this topic: Toque