Although not a sidelock, I've often wondered who was the father of the robust Brno O/U and I now think it was Alois Tomiška, Little Tom pistol designer:

http://www.google.com/patents?id=xU1DAAA...;q=&f=false

Alois Tomiška (February 1867 in Pardubice - 1946 in Prague), and many other Bohemian craftsmen, seem to have spent a good deal of time in the shops of the Vienna craftsmen and Alois Tomiška was no exception as I think he spent about 20 years there, probably at different ones but I suspect Nowonty saw him quite a bit. I guess they went to Vienna due to the Austro-Hungarian Empire. Alois Tomiška should have been a master by cira 1890 and he departed to Plzeň in 1918.

The Hubertus Company was a successor to J.Wenisch.

Kind Regards,

Raimey
rse