claymore jacob iA claymore, or "great sword," is the Scottish version of the late medieval two handed longsword. It is distinct for its cross hilt with forward sloping quillons that end in quatrefoil shapes. The claymore was in use from the 15th to the 17th centuries. Jacob I of Scotland (1394 1437) was crowned king in 1424 at Scone. After overcoming the Albany clan, who had conspired against him during his childhood, he worked to reduce the power of the feudal