Gubia or gulbia, in Ducange gulbium, an implement ad hortum excolendum, and also instrumentum ferreum in usu fabrorum; according to the New English Dictionary the word is probably of Celtic origin, gylf, a beak, appearing in Welsh, and gilb, a boring tool, in Cornish), a tool of the chisel type with a curved blade, used for scooping a groove or channel in wood, stone, &c. (see TooL).
This word was transferred to any sanctuary containing relics, in the early history of the Frankish Church, because the cloak of St Martin, cappa brevior Sancti Martini, one of the most sacred relics of the Frankish kings, was carried in a sanctuary or shrine wherever the king went, and oaths were taken on it (see Ducange, Glossarium, s.v.
Hardouin, Essai sur la vie et sur les ouvrages de Ducange (Amiens, 1849); and L.
See Ducange, s.v.
- Ducange, Histoire de l'empire de Constantinople sous les empereurs francais (Paris, 1657); Gibbon, Decline and Fall, vol.
The great "glossary" of Ducange is still in enlarged editions the indispensable encyclopaedia of the middle ages.