Which crafts were associated with the Irish god Goibhniu and the Welsh god Gofannon?

The Irish god Goibhniu and his Welsh equivalent, Gofannon, are both ancient Celtic deities whose names derive from the Celtic word for "smith," identifying them primarily as smith gods.12

In Irish tradition, Goibhniu was part of a divine trio of craftsmen alongside Luchta the wright and Creidhne the metalworker. Together, they were renowned for forging weapons that were lethal and unerringly accurate. Beyond his role as a smith, Goibhniu was associated with the following:12

• Brewing: He was the provider of the sacred otherworld feast and was said to brew a special ale believed to grant immortality.1
• Building: In later Christian tradition, he became known as Gobbán Saer (Gobbán the Joiner), a legendary builder of churches and other structures.12
• Healing: He was recognized for his powers of healing.2

The Welsh god Gofannon is similarly associated with metalworking. According to the Mabinogion, his assistance was considered vital for the specific task of cleansing the plow at the end of the furrows.1