[5] On the basis of similarity in prosody, he has also been identified as the composer of certain poems traditionally assigned to Columban, the saint and founder of Bobbio Abbey.
[8] There survives a notice of some books gifted by a priest named Theodore to Bobbio (Breve de libris Theodori Presbyteri) that lists: Martyrologium Hieronymi, et de arithmetica Macrobii, Dionisii, Anatolii, Victorii, Bedae, Colmani, et epistolae aliorum sapientum liber i.
[9] Colman wrote a 34-hexameter lyrical vignette which is the earliest poem about Saint Brigid, incipit Quodam forte die caelo dum turbidus imber ("One day, when a rain-storm happened to be raging in the heavens").
18095, where his poem is titled "Versus Colmani episcopi de sancta Brigida" (Verses of bishop Colman of saint Brigid).
1615, a ninth-century manuscript from Saint-Benoît-sur-Loire called the Liber sancti Benedicti Floriacensis, is a compilation of astronomy in which Colman's verses are found under the rubric "Colmanus nepos Cracavist in Roma virtutem hanc sanctae Brigitę praedicavi" in a section titled "De peritia cursus lunae et maris".
[13] He himself wrote the title for the piece in two hexameters: Colmano versus in Colmanum perheriles / Scottigena ficti patriae cupidum et remeantem.
[14] Colman expresses regret that he will be left behind, but the poem is absent the personal pleading and admonition typical of its genre (and exemplified by fellow Carolingian poets Walahfrid Strabo and Gottschalk of Orbais).