1919 'dan beri
It was given to me in 1975, with a known history of 55 years. It was started at an unknown time. My mother-in-law taught me, as it was a family tradition. I baked biscuits with it at least twice a week. They were requested if friends were coming for dinner.
Sometime around 2005, Ruth add potato water to Nadine's starter. It changed from smelling sweet and fresh to smelling like dug dirt. The starter's behavior changed. It didn't bubble like it used to do and taste changed. I changed the water that would collect on the top of the starter when it was sitting. I tried using a little bit of starter to grow more again, but that didn't change it much.