Dec 15: Feast of Drostan († early C7th), founder-abbot of the Pictish monastery of Deir (Deer). Several dedications to him in NE Scotland including Episcopal church at Old Deer. The old church at Aberdour, Aberdeenshire, claimed his relics. Also July 11. The C10th Book of Deer
ALT The Book of Deer, a pocket gospel-book, lying open.