Queen Elizabeth I of England requested that lavender conserve be at her table each day.
Cleopatra wore lavender scent to seduce Julius Cesar.
Lavender was an essential ingredient in "Four Thieves Vinegar" a tonic and treatment for victims of the infamous black plague.
Once source (Herbs & Herb Gardening by Jessica Houdret) states that the flowers can be steeped in water and the infusion used as a compress to relieve headaches. It is also used externally as an antiseptic.
Lavender sugar is easy to make at home. Bruise dried lavender flowers and add them to superfine or confectioners sugar. Store in an airtight jar until used. Use a sieve to remove flowers before use. Add the scented sugar to cakes, meringues or other sweets for a delicate flavor.