Door mijn gedaan; Done by me … Over the course of a century, between 1715-1815, approximately 140 girls from Middelburg were educated by more than twenty teachers. Maria Letellier was the most prolific and likely the most influential teacher, with her name appearing 24 times on samplers from the 1750s to the 1770s. She was followed by teacher Tannetje Wackeroet, whose name appeared 18 times, and Adriana de Vroe, with her name appearing 15 times on a sampler.