A Google user
This is a fascinating book, however, on page 193, concerning the family of Dr. Charles Merkel Niesley and Caroline W. Reigart, they had three children, not two, as follows:
I. Charles Merkel Niesley, b. 1893
II. Paul Niesley, b. 1895
III. John Reigart Niesley, b. 1900
Charles Merkel Niesley Jr. was my grandfather.