Mooer History, Family Crest & Coats of Arms
There are several distinct sources of the Mooer surname in Ireland. Most of the name find their roots with the Anglo-Norman "Strongbow" invasion of the 12th century. Many of these became de Mora. Others derived from the Old Irish "O Mordha," from the word "mordha," meaning "stately," or "noble."  The English surname Mooer is derived from the personal name "More," which is itself derived from the Old French word "maur," meaning "Moor."
Early Origins of the Mooer family
The surname Mooer was first found in Munster, where the name was firmly established shortly after the Strongbow invasion of Ireland in 1172. 
'Aimergin Ua Mordha, A.D. 1026.' O'Mordha is Anglicised O'More and More, which has now usually become Moore, The O'Mores were a powerful sept in Ireland." 
"Donal Mór (d. 1194), son of Turlough, was the last King of North Munster. "  The Guinness or MacGunness family claim descent from Cionga, son of Rory Mór and had a similar coat of arms complete with a gold lion on a green shield denoting their heritage.
Moore or O'Moore were the hereditary Lords of Leix. Of this branch was Charles O'More who had a younger brother named Rory Oge who in 1587 was slain by the English.
The Moores of Rahinduffe, Queen's County are a branch of this previous family. Of note was Anthony O'Moore who joined with the O'Neills and defeated the English army in 1598. 
Early History of the Mooer family
This web page shows only a small excerpt of our Mooer research. Another 124 words (9 lines of text) covering the years 1627, 1621, 1730, 1822, 1791, 1729, 1799, 1795, 1557, 1600, 1655, 1641, 1620, 1655, 1641, 1767, 1799, 1798, 1706, 1700 and 1703 are included under the topic Early Mooer History in all our PDF Extended History products and printed products wherever possible.
Mooer Spelling Variations
Medieval scribes and church officials spelled the names as they sounded, so a name was often spelled many different ways during the lifetime of a single person. The investigation of the origin of the name Mooer revealed many spelling variations including Moore, More, Moor, O'More, Moores, Mores, McMore, Moire, Moare, MacMoore, McMoir, Moir, Moors, O'Moore, O'Moire, McMoare, MacMoir, MacMoare, Mooer and many more.
Early Notables of the Mooer family (pre 1700)
Notable amongst the family up to this time was Rory O'More (d. 1557) and his son Rory Og O'More, who were both Irish leaders in the wars against the English (Tudor) Kings; Rory O'Moore (Roger O'Moore, O'More, Sir Roger Moore) (c.1600-1655), an Irish landowner of ancient lineage, most notable for being one of the four principal organizers of the Irish Rebellion of 1641; Rory "Roger" More...
Migration of the Mooer family
During the middle of the 19th century, Irish families often experienced extreme poverty and racial discrimination in their own homeland under English rule. Record numbers died of disease and starvation and many others, deciding against such a fate, boarded ships bound for North America. The largest influx of Irish settlers occurred with Great Potato Famine of the late 1840s. Unfortunately, many of those Irish that arrived in Canada or the United States still experienced economic and racial discrimination. Although often maligned, these Irish people were essential to the rapid development of these countries because they provided the cheap labor required for the many canals, roads, railways, and other projects required for strong national infrastructures. Eventually the Irish went on to make contributions in the less backbreaking and more intellectual arenas of commerce, education, and the arts. Research early immigration and passenger lists revealed many early immigrants bearing the name Mooer: Miles Moor, who settled in South Carolina in 1716; James Mooers, and his wife Isabel, who came to New Hampshire in 1725; Aaron Moore, who immigrated to Virginia in 1744.
The motto was originally a war cry or slogan. Mottoes first began to be shown with arms in the 14th and 15th centuries, but were not in general use until the 17th century. Thus the oldest coats of arms generally do not include a motto. Mottoes seldom form part of the grant of arms: Under most heraldic authorities, a motto is an optional component of the coat of arms, and can be added to or changed at will; many families have chosen not to display a motto.
Motto Translation: Conlan forever.