The name Judoc, meaning "Lord", is the 14th century Breton version of Iudocus in Latin, Josse in French, Jost, Joost, or Joos in Dutch, and Joyce in English.

Built in the eighth century at the place where Judoc's shrine was kept, the Abbey of Saint-Josse was a small monastery situated on the site of his retreat.

In 903, some monks of the abbey fled Norman raiders for England, where they bore Judoc's relics, which were enshrined in the newly built New Minster in Winchester.

In these regions, variations of Josse, Joyce, Joos, Joost, and the diminutive Jocelyn,[8] became popular names for both men and women, and a number of chapels and churches were dedicated to him.

[11] The Suaire de St-Josse, or "Shroud of Saint Judoc," is a rich, silk samite saddlecloth that was woven in northeastern Iran prior to 961.

Judoc was most famously mentioned by Chaucer's Wife of Bath, who swears "by God and by Seint Joce [Saint Joyce]."