Until the end of the 18th century, Liam was virtually unknown outside Ireland. In the mid-1850s, over a million and a half people left Ireland to escape the catastrophic great famine and, from then on, Irish names were heard everywhere. Liam as an independent name in England and Wales dates from 1932, but it was mainly confined to the families of Irish descent. By 1955, it was recorded for two boys in every 10,000, a figure it maintained until 1975, when it rose to four per 10,000.