Among the famous Irish family lines with lions in their crests are Murphy, Kelly, O’Sullivan, O’Brien, O’Connor and O’Neill (which are among the top 10 most common surnames in Ireland, as per a study titled 'A Survey of Irish Surnames 1992-97' by Sean J Murphy, published in Studies in Irish Genealogy and Heraldry, Windgates, County Wicklow, 2009-13, pp. 14-29). read more