These brothers are known for their collections of folk songs & tales, like "Kinder-und Hausmarchen"
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who published a collection of folk songs in 1805, they began collecting folk tales
... [DOC] [TLE] Charles Perrault - Pace University Webspace [PAR] His Stories or Tales from Times Past, with Morals: Tales of Mother Goose (1697) 
... were German brothers famous for their collections of folk songs and folktales, 
especially for Kinder- und Hausmrchen [ Grimm's Fairy Tales ] (1812-22).