Abstract
This paper is focused on the usage of Geoffrey of Monmouth's 'British history' during the War of the Roses by Edward IV of York, and especially in one of his genealogical rolls (Philadelphia Free Library, Lewis E 201). This richly illuminated, and highly elaborate manuscript could be used for understanding which role the 'British history' played in medieval rulers' propaganda.
The key role in Edward IV's genealogical roll is a coat of arms of the mythical founder of Britain - Brutus of Troy. This is rare, and probably the only surviving piece of Brutus' heraldry arms which was, according to primary sources, connected with many English and Welsh monarchs.This paper is complemented by my newest reaserch on the manuscripts from British Library and College of Arms in London.