[a] The 6th-century recension of Liber Pontificalis ('Book of the Popes') known as the "Felician Catalog"[b] includes additional commentary to the work's earlier entry on Eleutherius.

One addition ascribes to Eleutherius the reissuance of a decree:[c][5] "And he again affirmed that no food should be repudiated by Christians strong in their faith, as God created it, [provided] however that it is sensible and edible."

It is also possible, however, that the editor of the passage attributed to Eleutherius a decree similar to another issued around the year 500 in order to give it greater authority.

Haddan, Stubbs, and Wilkins[6] considered the passage "manifestly written in the time and tone" of Prosper of Aquitaine, secretary to Pope Leo the Great in the mid-5th century, and supportive of the missions of Germanus of Auxerre and Palladius.

Geoffrey of Monmouth's pseudohistorical History of the Kings of Britain goes into great detail concerning Lucius and names the pope's envoys to him as Fagan and Duvian.

In 1591, his remains were again moved to the church of Santa Susanna at the request of Camilla Peretti, the sister of Pope Sixtus V. His feast is celebrated on 26 May.