Irish names tend to vary widely in their spelling and overall form. The original Gaelic form of the name O'Derach is O Deirg, from the word "dearg," which means red.
Early Origins of the O'Derach family
The surname O'Derach was first found in County Mayo
(Irish: Maigh Eo) located on the West coast of the Republic of Ireland
in the province of Connacht
, where they held a family seat
in the baronies of Carra, Erris, and Tyrawley. They were descended from Fiachra, brother of Niall Mor, more commonly known as King Niall of the Nine Hostages, perhaps Ireland's greatest General/King.
Early History of the O'Derach family
This web page shows only a small excerpt of our O'Derach research.Another 253 words (18 lines of text) covering the years 165 and 1656 are included under the topic Early O'Derach History in all our PDF Extended History products and printed products wherever possible.
O'Derach Spelling Variations
Irish names were rarely spelled consistently in the Middle Ages. Spelling variations
of the name O'Derach dating from that time include Derig, O'Derig, O'Derrig, Derrig, Derieg, Derick, Derrick, O'Derick, O'Derrick, O'Durrig, Durrig, Derigan, Derigen and many more.
Early Notables of the O'Derach family (pre 1700)
Another 21 words (2 lines of text) are included under the topic Early O'Derach Notables in all our PDF Extended History products and printed products wherever possible.
Migration of the O'Derach family to the New World and Oceana
A massive amount of Ireland's native population left the island in the 19th century for North America and Australia
in hopes of finding more opportunities and an escape from discrimination and oppression. A great portion of these migrants arrived on the eastern shores of the North American continent. Although they were generally poor and destitute, and, therefore, again discriminated against, these Irish people were heartily welcomed for the hard labor involved in the construction of railroads, canals, roadways, and buildings. Many others were put to work in the newly established factories or agricultural projects that were so essential to the development of what would become two of the wealthiest nations in the world. The Great Potato Famine
during the late 1840s initiated the largest wave of Iris immigration. Early North American immigration and passenger lists have revealed a number of people bearing the name O'Derach or a variant listed above: John Derick, who arrived in Philadelphia, Pennsylvania in 1865; Edward Derigan, who arrived in Philadelphia in 1875; the Widow Derrick, who settled in Georgia in 1738 with two sons and two daughters.