I have some more information on Lambertus Franciscus Edema van der Tuuk, who was a good friend of my grandparents in Rotterdam / Hillegersberg where they all lived. He made some of the medallions on the facade of Rotterdam town Hall, but also carved the relief panels on the pulpit of the (protestant) Begijnhofkerk in Amsterdam, the designs for which were made by a young Piet Mondriaan ! We own some works of him (a carved mirror frame, a coat of arms, two bronze portrait plaques of twin daughters of my grandparents who both died in their infancy).
Gugel was a quite important, though traditional architect.
Dirk