In 1825 Wilhelm married Henriette Dorothea Wild, also known as Dortchen.
From 1837-1841 the Grimm Brothers joined five of their colleague professors at the University of Göttingen to form a group known as the Göttinger Sieben (The Göttingen Seven). They protested against Ernst August, King of Hanover, whom they accused of violating the constitution. All seven were fired by the king.
Wilhelm Grimm died in Berlin at the age of 73.
In Terry Gilliam's The Brothers Grimm, Academy Award winner Matt Damon played a fictionalized version of Wilhelm. A slightly less fictionalized version of Wilhelm was played by Laurence Harvey in the 1962 film The Wonderful World of the Brothers Grimm.