The grammar was quoted by several writers in Britain of the 8th century - Aldhelm, Bede, Alcuin - and was abridged or largely used in the next century by Hrabanus Maurus of Fulda and Servatus Lupus of Ferrières. About a thousand manuscripts exist, all ultimately derived from the copy made by Theodorus. Most copies contain only books I—XVI; these are sometimes known as the "Priscianus Major" ("Greater Priscian"). Others contain only books XVII and XVIII along with the three books to Symmachus; these are known as his work "On Construction" ("") or the "Priscianus Minor" ("Lesser Priscian"). A few copies contain both parts. The earliest manuscripts are from the 9th century, though a few fragments are somewhat earlier.