This Brian Boru Sword Brooch is made from sterling silver by Kieran Scully, Dublin jeweller and silversmith, and hallmarked at Dublin Castle. Brian Boru was born around 940 and was acknowledged as the High King of Ireland from around 1002. He and his allies won the Battle of Clontarf in 1014 but after the battle Brian was murdered by a retreating Viking. L 7.2cm W 2.2cm at widest. Packaged in a National Museum of Ireland gift box.