It is a continuation of historian-priest John of Fordun's earlier work Chronica Gentis Scotorum beginning with the founding of Ireland and thereby Scotland by Scota with Goídel Glas.
In the later books, down to the reign of Robert I (1371), he was aided by Fordun's Gesta Annalia, but from that point to the close, the work is original and of contemporary importance, especially for James I, with whose death it ends.
Bower engaged in a reduction or "abridgment" of the Scotichronicon in the last two years of his life, which is known as the Book of Cupar, and which is preserved in the Advocates' library, Edinburgh (MS. 35.
[3] Then arose the famous murderer, Robert Hood, as well as Little John, together with their accomplices from among the disinherited, whom the foolish populace are so inordinately fond of celebrating both in tragedies and comedies, and about whom they are delighted to hear the jesters and minstrels sing above all other ballads.
But, the rest of his men trembling through fear of death, Robert, trusting in the one so great whom he worshipped, with the few who then bravely remained with him, confronted his enemies and easily overcame them, and enriched by the spoils he took from them and their ransom, ever afterward singled out the servants of the church and the Masses to be held in greater respect, bearing in mind what is commonly said: "God harkens to him who hears Mass frequently.
One of the earliest-known tales of Robin Hood, the manuscript is dated to no earlier than 1450, and is housed at Cambridge University Library (MS Ff.5.48).
[4] Bower has been described as a less competent chronicler than Fordun, with one commenter calling him "garrulous, irrelevant and inaccurate" and noting that he "makes every important occurrence an excuse for a long-winded moral discourse".