From Warhammer 40k - Lexicanum
Brother Bethor is the Chapter Ancient of the Dark Angels Space Marine chapter.
As the Dark Angels' Chapter Ancient, Bethor is entrusted with the chapter's three sacred standards—the Standard of Devastation, Standard of Fortitude and Standard of Retribution. Bethor's tenure as chapter ancient began after feats of valour during the Cleansing of Durganion XIII, during which he reclaimed the 3rd company's banner from a Genestealer brood.
- 1: Codex: Angels of Death (2nd Edition), pg. 81