It is possible that Margaret was a daughter of John Finucane and Kate Lynch of Ardmore, Carhoonakineely, Tarbert. One source tells us she was but another says she was a daughter of a John Finucane of Ardmore who had sons named John - who emigrated to the United States - and possibly Frank. Because the John who married Kate Lynch had a son named John who did not emigrate, it seems there may have been two John Finucanes living in Ardmore around the same time resulting in the uncertainty regarding Margaret's parents.
Margaret and her husband, Richard Hudson, seemed to have moved around quite a bit after their marriage. It is probable that they lived in Duagh around 1830 because their daughter, Johanna, was baptised there in that year. It is also believed that they lived for a time in Ballyeagh (sometimes spelled Ballyeigh), near Ballybunion, and at another point they seem to have moved to Tralee where it is thought that their youngest child, Patrick Robert, was born in 1838 (although there is no documentation to support this) and where it is known that their daughter, Johanna, was married in 1847. By 1850 it seems they had left Tralee and settled in Kilbaha where thry had connections through Edward Hudson, a relative of Richard's from Tralee who owned more than 400 acres in Kilbaha at the time. Information on the Hudson family of Tralee is available in William Hudson's volume "The Hudsons of Tralee", a copy of which may be studied in Tralee and Listowel libraries. Unfortunately, when I visited Tralee library in 2005, I ran out of time before I had a chance to take a look at this particular book.
An indication of what life was like for Margaret and Richard back then comes from stories told by family members. For example, Richard and Margaret's son, William, once told a relative that he remembered that while a mass was being said at the house when he was a child, people were put on guard duty outside to see to it that no British police would bother those inside. He also remembered there being firearms in the house at the time. And William's brother, Patrick, told his own son, William, that his (Patrick's) mother, Margaret Hudson, was often "beaten up" by local Whiteboys, agrarian agitators who operated in Ireland at the time.
It is thought that Richard and Margaret may have had a second daughter, but no further information is available. Of their eight children that we do know of, six emigrated to the United States, with only their eldest son, who took over the family farm in Kilbaha, and their only daughter (that we know of) marrying a Kilbaha man and remaining in Kilbaha.
In case there is a connection, here's some information on a Finucane family with possible Duagh connections. It has been provided by Patricia Finucan (sic) of Pennsylvania (her family lost the 'e' in the surname after their arrival in the United Staes). Patricia's ancestor Thomas Finucane was born January or February of 1848 in Ireland and emigrated to the U.S. before 1870. He had at least two cousins who lived in the U.S., Daniel McCarthy and Maria McCarthy; and his death record states that his parents were John and either Ellen or Ann. Thomas was buried with members of the family of Daniel Dillon from Duagh. Patricia believes Thomas and Daniel Dillon were related as Thomas and his cousin Daniel McCarthy were living with Daniel Dillon's family at the time of the 1870 U.S. census.