[3] When Columbanus was expelled by Theuderic II, in 610, Deicolus, then eighty years of age, determined to follow his master, but was forced, after a short time, to give up the journey, and remained behind alone, establishing a hermitage at a nearby church dedicated to Saint Martin in a place called Lutre, or Lure, in the Diocese of Besançon, to which he had been directed by a swineherd.

Numerous miracles are recorded of Deicolus, including the suspension of his cloak on a sunbeam and the taming of wild beasts.

[4] Feeling his end approaching, Deicolus gave over the government of his abbey to Columbanus, one of his young monks, and retreated to a little oratory he had built a small chapel in honor of the Holy Trinity, where he died on 18 January, about 625.

So revered was his memory that his name (Dichuil), under the slightly disguised form of Deel and Deela, is still borne by most of the children of the Lure district.

His cultus was strong in the area of Lure well into the nineteenth century, when children's clothes were washed in a spring associated with Deicolus that was reputed to cure childhood illnesses.