Short answers, pulled from the story.
Audomar, later known as Saint Omer, founded the town of Saint-Omer when he arrived in the year 630. He was a bishop from Thérouanne who established the Abbey of Saint Bertin in the marshland.
The Duke of Marlborough laid siege to Saint-Omer in 1711, but the town resisted surrender through the efforts of Jacqueline Robin. Robin risked her life to bring provisions into the town, and a statue honoring her actions was erected in 1884.
Daniel Carroll, John Carroll, and Charles Carroll of Carrollton all studied at the College of Saint-Omer. The college operated in Saint-Omer until 1762 before moving to Bruges and later Liège.
The Marais Audomarois is one of the last cultivated marshes in France and a UNESCO heritage site surrounding Saint-Omer. The fertile soil allows for year-round production of cauliflower, carrots, endive, and watercress.
A previously unknown copy of the Shakespeare First Folio was discovered in the public library of Saint-Omer in November 2014. The book had been missing its first 30 pages and was authenticated by experts including Eric Rasmussen.
Saint-Omer served as a focal point for Royal Flying Corps operations during World War I and became the birthplace of several Royal Air Force squadrons. During World War II, the Luftwaffe used the airfield where Douglas Bader was initially treated after parachuting from his Spitfire.