marshal historical 11th century norman helmet lNasal helmets were used from the 9th to the 13th century. They take their name from the nasal bar, which provided protection for the face. In the early 12th century, a type of nasal helmet with a rounded skull developed. From the mid 12th century, this type began to replace nasal helmets with a conical skull. Helmets like this remained popular at least until the second half of the 13th century. They are depicted in sources such as the Maciejowski