Croix Cathedral in Orléans in 1483 (old scholarship reporting him in Milan, at the Sforza chapel, during the 1470s has been recently debunked).
Eloy is most famous to music historians for having provided a long poem, Le livre de la deablerie, recounting a dialogue between Satan and Lucifer, in which their nefarious plotting of future evil deeds is interrupted periodically by the author, who among other accounts of earthly and divine virtue, records useful information on contemporary musical practice.
[1] Eloy composed motets celebrating the 1429 liberation of Orléans from the English by Joan of Arc, although the music is lost (only the texts survive).
Eloy also wrote a five-voice mass which survives, the Missa Dixerunt discipuli, an elaborate tour-de-force of contrapuntal practice, which was praised by Tinctoris.
The mass was likely composed around 1470, since the date of Tinctoris's publication was 1472-1475, and three- and four-voice imitative sections such as appeared within it were quite rare before 1470.