As I have discussed previously, relics were an important part of medieval Christianity. The bones of a saint, or at least things associated with a saint (like a piece of clothing), created a tie between humans and a long-dead saint (though of course just being dead didn't keep a saint from being alive).
The first saints to have their relics gathered and put into altars in the West were martyrs. From the fourth century on, a lot of saints from the eastern half of the old Roman Empire had their relics dispersed to the West, where they were credited with working miracles. In subsequent centuries, more and more local or regional saints had their bones discovered and brought into town as relics. Most of these local saints had supposedly been martyred back in the second or third century and then been forgotten, until a vision took a pious Christian to their forgotten grave. So-called confessor saints, who had not had to die for their faith but who lived very holy lives (complete with miracles), soon joined the group.
Monasteries and other churches soon started collecting relics. As well as having the relics of martyrs from their own region or of their own early bishops, they started collecting the bones of other saints. A good place to get them was Rome, where the catacombs, the old quarries dug for the stone that built imperial Rome, were full of bones (the pagan Romans had wanted to put the dead somewhere far enough away that they were unlikely to come for them in the night). Christian martyrs were reputed to make up a large proportion of the bones.
Churches could also swap with other churches. Give another church a finger bone of one of your saints, get a foot bone or a piece of skull in return, and gain the attention of one more saint. A reliquary could be made to house the body part appropriately.
One could also steal relics if the saint was fed up with not receiving proper attention where she or he was now. Fed-up saints would appear in a vision, urging their removal from a less-than-ideal church, and protect the thieves as they triumphantly carried the relics home.
A church would usually have one principal saint (usually a local saint from late antiquity for a traditional monastery, Saint Peter if one needed a good all-purpose saint, Saint Stephen quite frequently for a cathedral if not another local saint, the Virgin Mary for a Cistercian monastery). But by the ninth or tenth century and certainly in later centuries, a church would have a whole collection of relics and would be happy to list them all. If they didn't have a big enough bone for its own reliquary, a little scrap of linen would be pinned around it, with an identifying tag, and all these small relics could be kept in a box.
In the late Middle Ages, many fewer new saints were recognized, but the old ones could continue to be divided. Some wealthy people, even one French king, had their own collections of (small) relics, which they could wear pinned to their clothing.
© C. Dale Brittain 2026
For more on medieval Christianity, see my new ebook, Still Medieval After All These Years, available from Amazon and other major ebook platforms. Also available in paperback.








