Hello Monica!
Your ancestor Johann (von) Prott was born in 1573 in Lemgo. He died at
27.12.1634 in Oldenburg, where he had been chancellor from 21.02.1605 - 1634. In
the year 1600 he married Maria Storck daughter of Anton Storck from Osnabrück.
Johanns parents where Hermann Prott, mayor of Lemgo, and Alheit Dreyer.
This informations are from the book "Biographisches Handbuch zur Geschichte
des Landes Oldenburg", von Hans Friedl u.a., Oldenburg, Isensee Verlag, 1995,
ISBN 3-89442-135-5.
There is also a picture of Johann Prott in this book. If You can read
German, I can scan this article and sent it to You.
In this book are no informations about children of Johann Prott, but I think
the Staatsarchiv Oldenburg may have informations about Johann Prott and his
children.
With best wishes from Hannover,
Gunter Jüchter