John Bartlam, a failed Staffordshire potter, emigrated to America in the early 1760s. By 1763 he had established a pottery making venture in Cain Hoy South Carolina where he made a standard range of mid-18th century English-style earthenwares and experimented with porcelain production.
Fragments of underglaze blue printed porcelain were found during excavations on the site.
Teabowl fragments, John Bartlam, Cain Hoy, South Carolina, 1765–1770. Soft-paste porcelain. (Courtesy, South Carolina Institute of Archaeology and Anthropology; photo, Stanley South)
To see a Bartlam example in this exhibit click here
For more information see
Robert Hunter, American Porcelain Teabowl The Magazine ANTIQUES, January/February 2011
http://www.themagazineantiques.com/articles/american-porcelain-teabowl/
and articles in Ceramics in America published by the Chipstone Foundation, 2007
Stanley South, John Barthlam’s Porcelain at Cain Hoy, 1765-1770
http://www.chipstone.org/html/publications/CIA/2007/South/SouthIndex.html
Lisa R. Hudgins, John Bartlam’s Porcelain at Cain Hoy: A Closer Look
http://www.chipstone.org/html/publications/CIA/2007/Hudgins/Hudginsndex.html