His Epilogum in gesta sanctorum (Afterword on the Deeds of the Saints), which set a new style in hagiography designed for practical use by preachers, specifically to inspire a lay audience with marvels and moral admonitions, was one of two main sources for Jacobus de Voragine's compendium, Golden Legend.
Bartholomew travelled widely in Italy, France and Germany; politically astute, was often in attendance at both the Papal and Imperial courts.
[4] The modern edition is that of Emore Paoli (Sismel, Edizioni del Galluzzo, 2001),[5] superseding that of D. Gobbi (1990), transcribing a manuscript from Klosterneuburg.
At one point "in the first half of the thirteenth century, Bartholomew of Trent recounted a number of apparitions of the archangel Michael"[6] that embellished the story of Pope Gregory's famous letania septiformis created to quell the plague of 590 caused by the overflowing of the river Tiber in Rome.
"[7] The text concludes, "Then Gregory saw an angel of the lord standing atop the castle of Crescentius, wiping a bloody sword and sheathing it.