Final answer:
The title the Brothers were known as in France until 1900 is not clearly specified; potential references could be the 'Brothers Grimm' or the 'Corsican Brothers' from literature, but without clear context, the specific title cannot be determined.
Step-by-step explanation:
The question refers to a title that the Brothers were known by in France until 1900, yet it does not provide a direct reference to a specific group of brothers. However, based on historical context, one possibility is the 'Brothers Grimm', known for their collection of German folk tales. Another could be referring to the 'Corsican Brothers' from Dion Boucicault's melodrama which was based on the French novella by Alexandre Dumas. It's important to establish the correct context to provide an accurate answer, and unfortunately, the information provided does not specify which brothers or which title is referred to.