Outside the United Kingdom, the remaining Gaelic nobility of Ireland
continue informally to use their archaic provincial titles. As Ireland
was nominally under the overlordship of the English Crown for between
the 12th and 16th centuries, the Gaelic system coexisted with the
British system. A modern survivor of this coexistence is the Baron
Inchiquin, still referred to in Ireland as the Prince of Thomond. The
Prince of Thomond is one of three remaining claimants to the
non-existent, since the 12th century, so-called High Kingship of
Ireland, the others being The O'Neill, and the O'Conor Don.
Chief of the Name was a clan designation which was effectively
terminated in 1601 with the collapse of the Gaelic order, and which,
through the policy of surrender and regrant, eliminated the role of a
chief in a clan or sept structure. Contemporary individuals today
designated or claiming a title of an Irish chief treat their title as
hereditary, whereas chiefs in the Gaelic order were nominated and
elected by a vote of their kinsmen. Modern "chiefs" of tribal septs
descend from provincial and regional kings with pedigrees beginning in
Late Antiquity, whereas Scottish chiefly lines arose well after the
formation of the Kingdom of Scotland, (with the exception of the Clann
Somhairle, or Clan Donald and Clan MacDougall, the two of royal
origins). The related Irish Mór ("Great") is sometimes used by the
dominant branches of the larger Irish dynasties to declare their
status as the leading princes of the blood, e.g. Ó Néill Mór, lit.
(The) Great O'Neill.
Following the Norman invasion of Ireland several Hiberno-Norman
families adopted Gaelic customs, the most prominent being the De Burgh
dynasty and FitzGerald dynasty; their use of Galic customs did not
extend to their titles of nobility, as they continuously utilized
titles granted under English monarchy authority.