Re: Colla's from Venice Area
As a bearer of the name I become interested on the family roots and did some research on that, started the process few years ago after a school homework of my daughter bring the point that we're in the dark about our origins.
The older reference I got to my own branch went as far as circa 1890 with my grand-grand parent and his brothers who performed a world wide diaspora from Italy into several places of the world. Predominantly Argentina (3 brothers), Brazil (3 brothers), Australia (1 brother) and USA (2 brothers).
There was 2 brothers that remained in Italy, alledgely going into the Winery industry, but I was unable to make a solid connection yet.
I was able to track direct descendants of at least two of the branches in Brazil, one additional in Argentina (today mostly unrelated to our own branch) and nothing else.
During the journey however I got substantial proof about the overall history of the family which could be traced back as far as the 1500's in the Italian Alto Addigge or Austrian Southern Tirol (that part of the world was a highly disputed one for centuries and actual sovereignity belong to the side with more force or money or both).
The name had received many distortions over years because of mispelling problems and cultural biases. It's regarded that anyone bearing the name Kolla, Collia, Colhia and Coll or Koll comes from the same origins (albeit I'm not in position to confirm that for sure beyond any doubt).
It was a family of blacksmiths artisans whose oldest traceable founder was named Giacomo Colla. There is today a little Colla town some 70 Km North of the Italian city of Milano which was the center of the family roots (in the very heart of the Alps).
Over a period of centuries descendants of that original root spread over northern Italy specially in the Milano and Parma areas, never heard of a Venice branch but it's highly likely since it's few kilometers apart from known places where Colla family members had been documented to live.
The threads got a little foggy starting them because of lack of documentation but there are known instances of Colla family members in France (1700), Holland (1700), England (1700-1800) and Germany (1800).
All families I contacted in USA seems to descend either from the England or Holland branches, except for a guy named Mike Colla in Nevada which was a relatively recent derivative of an Italian (Sicily based) branch of the family.
One funny thing about one contact I did with a charmy young lady in Australia is that most people there comes from a Dutch origin and in general the name is regarded as originated in Holland (albeit this lady comes from Italian origins too).
Hope this might add something to you and of course I would gladly appreciate any piece of information you could provide on your own now or because of some future finding.
Best Regards, Pedro E. Colla.