Remains found in a tomb in northwestern Spain are likely to belong to a ninth-century bishop believed to have helped create the Camino de Santiago, one of Christianity’s most popular pilgrimages, a new study has found.

A combination of bone analysis, carbon dating, stable isotope analysis and DNA testing yielded data that “supports the possibility” that the human bones found in 1955 are those of Bishop Theodomir, according to a paper published on Tuesday in the “Antiquity” journal.