The Brotherhood of Blackheads (German: Bruderschaft der Schwarzhäupter; Estonian: Mustpeade vennaskond; Latvian: Melngalvju brālības) is an association of local unmarried male merchants, ship-owners, and foreigners that was active in Livonia (present-day Estonia and Latvia) from the mid-14th century till 1940 but still remains active in present-day Hamburg.
The Hanseatic towns in Livonia lost much of the importance that they had enjoyed during the Middle Ages and the Brotherhood of Blackheads gradually transformed from a military society to a predominantly social organization.
Although the chivalric code of honor the Brotherhood subscribed to and the rules governing close combat were mostly preserved, the military importance of Blackheads gradually diminished.
In 1531, the Blackheads acquired the building from the town councilor Johann Viant and his wife Kerstine Bretholt (Breitholtz) and rebuilt it in the Renaissance style of the period.
[3] During the Middle Ages, the established merchants from the Brotherhood of Blackheads in Tallinn, known as the "older bench", were required to attend daily meetings of the Great Guild in order to familiarize themselves with the current trade situation and the art of commerce in general.
Both celebrations commenced with an official session where organizational matters were settled, and continued with feasts, dancing, and festivities that sometimes included the whole town.
At the last night of the celebrations leading up to the holidays, the tree was taken to the Town Hall Square where the members of the brotherhood danced around it.
A large fine – five pounds of wax – had to be paid by a brother who "grabbed another member by the hair or flung beer into his face".
The origin and the dual nature of the Brotherhood of Blackheads as a military organization and a commercial association is unique in European history.
The commercial aspect of the Brotherhood reflects its origin in the early days of the Hanseatic League that marked the beginning of a new era, less military and more commerce oriented, in Northern Europe.
Some traditions of the Blackheads survive in the customs of Baltic-German Corps and Estonian and Latvian student corporations.
Ceremonial consumption of alcohol, elaborate drinking vessels, personal code of honor, and strict rules governing the relationship between members, including institutionalized fines and punishments, resemble in many respects the traditions of the Blackheads.
In the regional structure of the Estonian Defence League, corporation members in the former Blackhead centers Tallinn and Tartu maintain their own military malevkonds (major subunits of malevs) whose main duty is the defence of their respective cities against possible enemy invasion.