I had a starter for several years that was descended from the one kept by Dick Proenekke [1]. He lived alone in a cabin that he built himself--by hand--deep in the Alaskan bush. He made sourdough pancakes daily and his original starter came from a friend of his back in town. Someone related to this person sells the starter (on a wooden spoon) that you can buy [2] and use to create your own descendant. There's a fasci…
Correct me if I'm wrong but if you get sourdough made at some other place after couple of weeks your local culture will take over thus sourdough will loose that other place uniqueness so to speak. But I'm not an expert just something I remember when I was interested in sourdough and pizza making.
The sourdough that comes from your kitchen is going to be unique to that place. Even moving across town can have a huge difference. It's a built-in thumbprint that makes sure that no one can ever really make grandmas pizza bottoms, or baguettes, quite the same...