A recently deceased Dominican, who also was named Jordan of Saxony had produced such a work about the first Dominicans.
Jordan of Saxony O.S.A. was a friar capable of doing likewise for the Augustinian Order.
The latter was regarded as a man of vast experience as a result of his years of research,
He was the Augustinian most acquainted with all historical and juridical questions pertaining to the Order.
Through his initiative and personal energy, Jordan collected and collated material for this project.
His work as Provincial and his various other duties impeded his progress, but in 1357 he finally published his work.
His Liber Vitasfratrum ("A Book about the life of the Brothers") was published in 1357. It proved to be his most original and most valuable written work. Indeed, it has also been described as one of the most mature and most significant ascetical writings of fourteenth-century Europe.
(Beforehand, he had written a Vita (Life) of Augustine and commentaries on the Bible, and books of sermons afterwards.)
It was certainly a major achievement. When later produced as a book with octavo pages and with lettering of less than the usual size, the Vitasfratrum exceeded 440 pages.
Therein he gives, using the example of the Augustinians living at his time, a very clear idea of the spirituality of the Order of Saint Augustine
. He offered his Liber Vitasfratrum to every individual Augustinian friar, so that he could use it as a measure of the extent to which he was a “true brother of the Order.”