[1] He was one of the ten children born to Adrian de Blois, Sieur of Jumigny, and his wife Catharine Barbanson.
[2] He was educated at the court of the Habsburg Netherlands as a page of the future emperor Charles V,[3] who remained to the last his staunch friend.
During the early years of his tenure as Abbot, he bore the laxity of the monks with patience, rather than risk any internal conflict.
Liessies, being on the frontier, became an unsafe habitation and Blosius proposed a move to the priory at Ath, in the interior, but most of his monks, being opposed to his reform, elected to go to other monasteries.
Though Charles V pressed in vain upon him the archbishopric of Cambrai, Blosius studiously exerted himself in the reform of his monastery and in the composition of devotional works.
[4] Blosius's works, which were written in Latin, have been translated into almost every European language, and have appealed not only to Roman Catholics, but to many English laymen of note, such as William Ewart Gladstone and Samuel Taylor Coleridge.