The Irish in Australia and New Zealand: A Resource for Family Historians - Paperbackby Trevor Parkhill (Editor), William Roulston (Editor) It is estimated that 8 million men, women and children emigrated from Ireland in the nineteenth century, of whom some five per cent, a not insignificant proportion, found their way to Australia and New Zealand. Just as significantly, The Oxford Companion to Irish History (1998, p. 31) considers that Irish migrants 'made up nearly a quarter of all immigrants [to Australia] during that period'. The