Complex sentence: He was appointed directly to the Supreme Court of Ireland in 1966 and on the retirement of Cearbhall Ó Dálaigh in 1972 he became Chief Justice of Ireland.
Split into simpler sentences: He was appointed directly to the Supreme Court of Ireland in 1966 and on the retirement of Cearbhall Ó Dálaigh. In 1972 he became Chief Justice of Ireland.