At the time of the Gauls, Tarwanna or Tervanna was the capital of the Belgian tribe of the Morini. After the Romans conquered Gaul, they too made the city the capital of the Civitas Morinorum district.
The origin of the name has several theories. According to the historian Malbracq, it got its name from its founder "Lucius Tauruannus",[5] others say it is derived from "Terra avanae" The land of Oats. But this second derivation seems to be a generic used term.[6]
Thanks to that ecclesiastical control of some of the most prosperous cities north of the Alps, like Arras and Ypres, the bishopric was able to build a cathedral which was at the time the largest in France.
The town was captured by the Emperor Maximilian and Henry VIII from the French in 1513 after the battle of the Spurs. In 1553 Charles Vbesieged Thérouanne, then a French enclave in the Holy Roman Empire, in revenge for a defeat by the French at the siege of Metz. After he captured the city he ordered it to be razed, the roads to be broken up, and the area to be ploughed and salted.[dubious – discuss][7] Only a small commune which lay outside the city walls, then named Saint-Martin-Outre-Eaux, was left standing, and later (probably around 1800) took over the name Thérouanne. Part of the portal of the cathedral was acquired by Saint-Omer; a colossal statue of Christ is all that is left of it these days.
Thérouanne is twinned with Hamstreet in Kent (in southern England, across the English Channel).
Notable people
The football manager Gérard Houllier was born in Thérouanne.
Hugh of Saint Omer (also Hugh of Falkenberg or Hugh of Fauquembergues, died 1106) was the Prince of Galilee and Lord of Tiberias.
In literature
The town appears as Taruenna in a novel about an English pilgrimage to Rome by Matthew Kneale.[9]
In Hilary Mantel's novel Wolf Hall the first conversation between the central character Thomas Cromwell and Henry VIII, about the futility of war, sees Henry chide Cromwell for describing Thérouanne as a 'dog hole' in a speech in parliament opposing funds for a new expedition in France.[10]