By Dave Eldreth and his family (and as many as 30 employees). Making traditional salt glazed stoneware and redware in Amish country in Pennsylvania. As of 2021 had at least two locations.
I have heard but not confirmed that Eldreth Pottery had closed down completely and that David Eldreth has died.
References:
http://www.chestercounty.com/2017/10/31/158794/eldreth-pottery-founder-is-moving-in-new-direction