Dempsie History, Family Crest & Coats of Arms
- Origins Available:
Today's Irish surnames are underpinned by a multitude of rich histories. The name Dempsie originally appeared in Gaelic as O Diomasaigh, from the word "diomasach," which means "proud." 
Early Origins of the Dempsie family
The surname Dempsie was first found in King's County and Queen's County, where they were traditional Chiefs of Clanmaliere, a territory that lay on both sides of the river Barrow. It contained parts of Geashill and Phillipstown in Kings County and parts of Portnehinch in Queen's County. They claim descent through the O'Connors of Offaly, specifically the 2nd century Irish King, Cathair Mor. 
According to O'Hart, they claim descent from through the "Connor" Faley pedigree.
Early History of the Dempsie family
This web page shows only a small excerpt of our Dempsie research. Another 286 words (20 lines of text) covering the years 1172, 1193, 1652, 1865, 1599, 1631 and 1641 are included under the topic Early Dempsie History in all our PDF Extended History products and printed products wherever possible.
Dempsie Spelling Variations
Just like the English language, the Gaelic language of Ireland was not standardized in the Middle Ages. Therefore, one's name was often recorded under several different spellings during the life of its bearer. Spelling variations revealed in the search for the origins of the Dempsie family name include Dempsey, O'Dempsey, Dempsy, Dempsay, Dempsie and many more.
Early Notables of the Dempsie family (pre 1700)
Notable among the family name at this time was Sir Terence O'Dempsey, knighted May 1599, by Robert Devereux, earl of Essex, Lord Lieutenant of Ireland. Terence was created "Baron of Philipstown," and Viscount Clanmaliere, by patent dated 8th July, 1631, temp. Charles I.
He had five sons, two of which were clergy:...
Another 52 words (4 lines of text) are included under the topic Early Dempsie Notables in all our PDF Extended History products and printed products wherever possible.
Migration of the Dempsie family
Death and immigration greatly reduced Ireland's population in the 19th century. For the native Irish people poverty, hunger, and racial prejudice was common. Therefore, thousands left their homeland to seek opportunity in North America. Those who survived the journey and the quarantine camps to which they arrived, were instrumental towards building the strong developing nations of the United States and the future Canada. By far, the largest influx of Irish settlers occurred with Great Potato Famine during the late 1840s. These were employed as construction or factory workers. An examination of passenger and immigration lists has shown early immigrants bearing the name Dempsie: Ann, Biddy, Bridget, Catherine, John, and Henry Dempsey who settled in Quebec in 1840; Edward Dempsey settled in New York in 1810; Jeremiah Dempsey settled in Mississippi in 1820.
- MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)
- O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)