E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Patron saint of artists and smiths. He was a famous worker in gold and silver, and was made Bishop of Noyon in the reign of Dagobert. Probably the St. Eloi of Chaucers Prioress was St. Louis (St. Loy)
Ther was also a nonne, a prioresse,
That of hire smylyng was ful symple and coy!
Hire grettest ooth was but by Seynt Loy.
Chaucer: Canterbury Tales, Prol. 1820.
We find reference to Seynt Loy again in verse 7143.