Brielle (pronounced[ˈbrilə]ⓘ), also called Den Briel in Dutch and Brill in English, is a town and historic seaport in the western Netherlands, in the province of South Holland, on the north side of the island of Voorne-Putten, at the mouth of the New Maas. The former municipality covered an area of 31.14 km2 (12.02 sq mi) of which 3.59 km2 (1.39 sq mi) was water. In 2021 its population was 17,439.
The former municipality of Brielle also included the communities of Vierpolders and Zwartewaal.
Brielle is a very old, fortified town. Its name is derived from the Celtic word brogilo (meaning "closed area" or "hunting grounds"). The oldest writings about Brielle indicate that the current location is the "new" Brielle. Den ouden Briel (Old Brill) must have been situated somewhere else on the Voorne-Putten Island. It grew into a town of prestige in the 14th century. In 1330, Gerard van Voorne, independent Lord of Voorne and Viscount of Zeeland, granted town rights to Brielle. This gave the town governmental and jurisdictional powers and certain trading rights, such as the right to trade fish and collect port taxes.[4] The town was for a long time the seat of the Lords of Voorne, until this fiefdom was added to the County of Holland in 1371. It had its own harbour and traded with the countries around the Baltic Sea. Brielle even had its own trading colony in Sweden.
During the Eighty Years' War between the Netherlands and Spain, the Capture of Brielle on April 1, 1572, by Protestant rebels, the Watergeuzen, marked a turning point in the conflict, as many towns in Holland then began to support William of Orange against the Spanish Duke Fernando Álvarez de Toledo, 3rd Duke of Alba who was sent to pacify The Netherlands. This event is still celebrated each year on April 1 and the night before (known as Chalk Night (kalknacht) when the town is defaced with chalk - and now also white paint). Dutch students are taught a short rhyme to remember this fact, which rhyme refers to April Fools' Day:
Op 1 april verloor Alva de bril. Op April zes verloor Alva zijn fles
On April 1st, Alva lost his glasses On April 6th Alva lost his bottle
In Dutch, "de bril" is the word for "the glasses," and closely rhymes with Den Briel; as does "Fles" which stands for the town of Vlissingen or Flushing, the next town to be captured by the Dutch rebels.
After the capture of Brielle the Protestant rebels tortured and murdered the Catholic Martyrs of Gorkum and Brielle has become a pilgrimage location since then.