Based on Jones & Mattingly's Atlas of Roman Britain (ISBN 978-1-84217-06700, 1990, reprinted 2007) — the source is cited in the image legend — regions with AS cemeteries are from p. 317 (early 5th century) and p. 318 (late 5th century); locations and names of the kingdoms and subkingdoms are assumed from 'common knowledge'; names of Romano-British post-Roman tribes are not known although they survived for some time after the end of Roman Britain ... they are denoted by the pre-Roman tribal name, enclosed in parentheses and annoted with a "?".