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 fascinating PBS documentary on him that you can watch on YouTube, if you're interested: [3]
There's a fascinating PBS documentary on him that you can watch on YouTube, if you're interested: [3]
[1] https://en.m.wikipedia.org/wiki/Richard_Proenneke
[2] http://richardproenneke.com/heirloom_sourdough_starter_spoon
[3] https://youtu.be/iYJKd0rkKss