This very interesting and rare name is a variant of "(O) Domegan", the Anglicized form of the Gaelic "O'Domagain", the "male descendants of (o) Domagain" from the Garlic word "donna", poor, hence the bearer may have been somebody who may not have had many worldly possessions. The name was probably introduced into England by emigrants arriving in the major cities of England, during the Irish Great Famine (1845-1847) when there was considerable movement of Irish people to England and beyond. The name is found in Co. Down in the form Dumigan. Mary, daughter of Thomas and Mary Dummagan was christened in Dromore Parish, Co. Down on July 1st 1798. At Athy, Co. Kildare, Patrick and Catherine Domican had a daughter christened on September 8th 1865, while in Belfast, Co. Antrim, Samuel, the son of Samuel and Matilda Doumican was baptised on October 4th 1865. Michael, son of Laurence and Mary Domican was baptised in Dublin on January 29th 1867. The first recorded spelling of the family name is shown to be that of William and Jane Dumagon, which was dated April 26th 1788, Christening witnesses at Dromore Parish, Co. Down, during the reign of King George 111, "Farmer George", 1760 - 1820. Surnames became necessary when governments introduced personal taxation. In England this was known as Poll Tax. Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.