The White Rod, White Wand, Rod of Inauguration, or Wand of Sovereignty, in the Irish language variously called the slat na ríghe (rod of kingship) and slat tighearnais (rod of lordship), was the primary symbol of a Gaelic king or lord's legitimate authority and the principal prop used in his inauguration ceremony. First documented in the 12th century Life of Máedóc of Ferns, but assumed to have been used long before then, it is last documented in Ireland in the early 17th century. In Scotland the rod was used into the 13th century for the inauguration of its last Gaelic kings, and for the Norse-Gaelic Lords of the Isles into the 15th.
While the reception of the rod was in origin a Gaelic cultural feature, following the Norman invasion of Ireland some foreign families became significantly Gaelicised. A notable Anglo-Norman example were the great De Burgh magnates styled Mac William Íochtar, who had become completely Gaelicised and received the White Rod.
The rod was required to be both white and straight, with the colour representing purity and the straightness of justice, according to the account given by Geoffrey Keating.
Although the meaning and purpose were always the same, the particulars of the ceremony appear to have varied across the Gaelic world. Most notably who presented the new lord or king with the rod depended on the history and traditions of each kingdom.
A note to the pedigree of the O'Mahonys at Lambeth, written by Sir George Carew, circa 1600/3:
O'Mahon's country doeth follow the ancient Tanist law of Ireland; and unto whom Mac Carthy Reagh shall give a white rod, he is O'Mahon, or Lord of the Country; but the giving of the rod avails nothing except he be chosen by the followers, nor yet the election without the rod. The MacCarthy Reagh was inaugurated with the same ceremonial with which he inaugurated the O'Mahon and other dependent chiefs. There was a grievance attached to this, and it did not escape the keen eyes of the Cork juries, who presented: 'That when any Lord or Gentleman of the Irishry within this county, is made Lord or Captain of his name or kindredtie, he taketh of every inhabitant, freeholder, and tenant under him, a cow to be paid for erecting a rod in that name.