Undated
JL
Triangular outline and back-to-back JL distinguish the personal mark; this seal alone does not narrow an object to a decade.
impressed · stoneware · St Ives, Cornwall, United Kingdom
Pottery & porcelain
Janet Leach pottery marks
Janet Leach pottery marks include impressed “JL” on stoneware in St Ives, Cornwall, United Kingdom. Janet Leach was active 1956–1997.
- Active years
- 1956–1997
- Country
- United Kingdom
- Products
- stoneware vessels, porcelain, slab-built vases, jars, bowls
- Marks
- 1
1956–1997 is the St Ives phase, not her whole ceramic career. Pottery studies began in the United States before her 1954–1956 stay in Japan.
What to look for
- Look for J and L back to back within a triangular seal, often beside the circular St Ives pottery mark.
- The St Ives SI seal identifies the workshop. The separate JL triangle identifies Janet Leach.
- Check the lower wall and basal rim as well as the underside; glaze can partly fill these small impressions.
Dated marks & timeline
1 markAbout Janet Leach
Janet Leach was born Janet Darnell in Grand Saline, Texas, in 1918. She studied sculpture in New York and later developed an interest in pottery, training at Inwood Pottery and Alfred University. Meeting Bernard Leach and Shōji Hamada at Black Mountain College in 1952 helped turn her attention towards Japanese ceramic practice.
She travelled to Japan in 1954, working with Hamada and at the Ichino family pottery in Tamba. Traditional wheels, wood firing and the direct handling of clay became lasting influences. She married Bernard Leach in 1956 and moved to St Ives, where she took responsibility for the commercial management of the Leach Pottery while continuing her own work.
Her individual vessels combined throwing with altered, coiled and slab-built forms. Rough clay bodies, mineral inclusions, strong glaze pours and partly exposed surfaces gave them a character distinct from the pottery’s standard wares. She built a separate studio and experimental kiln to develop these ideas. After Bernard’s death in 1979 she continued making and exhibiting in Britain and Japan. She died in St Ives in 1997.
Also known as: Janet Darnell · Janet Darnell Leach
Look-alikes & how to tell them apart
Other Leach Pottery makers
The circular SI workshop seal is shared. Janet’s triangular JL seal must be distinguished from another potter’s initials beside it.
Bernard Leach →
Bernard’s BL personal seal is different from Janet’s back-to-back JL triangle; both can accompany the St Ives pottery seal.