So, what makes Germans want to celebrate something annually for 200 years? A royal wedding between Prince Ludwig and Princess Therese on October 12, 1810. “Prince Ludwig was so much in love with Therese, he invited everyone in the surrounding areas to their wedding,” former native German teacher Christine Hernandez said. “He named the entire meadow where Oktoberfest is held after her, Theresienwiese, Wiesn for short.”