It appears to be done by a family member and was possibly done by Jean-Charles de Büren (1636-1719). I imagine my ancestor with a quill and ink reservoir at a large table diligently writing out the early history of the de Büren family. I am sure it never crossed his mind that one of his descendants would be looking at his work 350 years on.
de Büren family genealogy parchment roll first entry – Arnold de Büren, 1166
14th century section
Parchment roll ends with the children of David de Büren and Marguerite de Bonstetten