http://hometown.aol.com/ttrim36387/douglas.html Holy Rood. A relic of the True Cross, also known as the Black Rood of Scotland, which was brought to Scotland by Queen Margaret, wife of King Malcolm, and guarded by William ``the Seemly'' St. Clair (1028-1070). Both, Holyrood House and Holyrood Abbey, both in Edinburgh, were built to house it. Rumor has it that during the Reformation it was hidden in Rosslyn Chapel.