Hugh Weir's O'Connor clan record is a most useful introduction to the several often unrelated and differently spelt bearers of the name. Books have been
written especially on the Royal O'Conor family of Connacht, the Midland or Offaly O'Connors whose exploits against the Normans are fascinating, and the O'Connors of North Kerry. First
published in 1994, O'Connor People and Places contains family trees, family Arms, owners of estates, a biography, buildings connected with them and illustrations of some, together with short
essays on such significant personages as General Francisco O'Connor of Bolivia, artist John O'Connor, U.S. Cardinal O'Connor and historian Charles O'Conor of Belanagare. The cover lists
many spellings of the name.