The 1906 was a dubbing from the Grand Duke whose seat was in Neustrelitz, different, I suppose, from the earlier 1898-1900 verleihungen.
As to the other Otto Bock:
"Ziegelei" are brickworks, so the Otto Bock the Ziegelei-Ingenieur was a specialist in brickwork (firebrick, probably) for "steam", falsework, chalk, gypsum and cement factories. He appears to have written a pair of books about bricks and brickmaking.
He might have been a customer of Otto the Hoflieferant, but that would have been the extent of it.
Last edited by Dave in Maine; 06/06/12 04:58 PM.
