This sourdough is from the 1850's. Your timeline doesn't allow sourdoughs this old. My Karelian grandmother baked amazing rye sourdough. When she no longer baked, I had to try my own in the 1980's. White sourdough came much later into my life, out of curiosity. There's no turning back now. Only in dire need do I buy "store-baked" bread.
More than a personality, there is the sense of history, a long line of women baking.