Mannion / O'Mainnin / Manning. Mine are from Tiaquin/Menlough, County Galway, Ireland (via Tipperary). Clan: Cinel Deigill of the Irish tribe Soghain. However, they were not of that group by descent, as their ancestors were the ancient pre-Celtic Pictish rulers of that area. Motto: Esse quam videri (To be, rather than to seem).