In the news it was announced how the story of Niall and the Nine Hostages looked
like it was based in fact.  These findings are based on the genetic testing of men,
because the Y chromosome goes mostly unchanged from father to son.  It seems
that 20% of men from Northwestern Ireland and about 3 million men world wide
have this unique genetic marker which has turned the myth of Niall back to history.
 
Below is a chart, including all of the surnames linked to Niall, and other family
names with their associated myths, histories and stories.

To read more about the genetic testing, please see the January 2006 issue of The
American Journal of Human Genetics.
Name
Mythical or Historical Figure
Link to Text
Boyle
Niall of the Nine Hostages
Ui Neill
Bradley
Niall of the Nine Hostages
Ui Neill
Campbell
Niall of the Nine Hostages
Ui Neill
Cannon
Niall of the Nine Hostages
Ui Neill
Carey
The O'Kearys, (or in Irish
called O Ciardha), who in later
times always used the
anglicized form Carey,
belonged to the southern Ui
Neill
Ui Neill
Connor
Niall of the Nine Hostages
Ui Neill
Devlin
Niall of the Nine Hostages
Ui Neill
Doherty
Niall of the Nine Hostages
Ui Neill
Donnelly
Niall of the Nine Hostages
Ui Neill
Doody
The name traces its descent
from Fiachra, brother of Niall of
the Nine Hostages, through
Daighi, the last pagan King of
Ireland
Ui Neill
Egan
Niall of the Nine Hostages
Ui Neill
Fergus/Ferguson
Carrickfergus in Co. Antrim is
said to have been named after
Fergus mac Roigh, the "Red
Branch" hero of the Táin and
reputed ancestor of several
Ulster septs
Fergus mac Roigh
Ferris
Carrickfergus in Co. Antrim is
said to have been named after
Fergus mac Roigh, the "Red
Branch" hero of the Táin and
reputed ancestor of several
Ulster septs
Fergus mac Roigh
Flynn
Niall of the Nine Hostages
Ui Neill
Gallagher
Niall of the Nine Hostages
Ui Neill
Geoghegans
The sept of the
MacGeoghegans is of the
southern Ui Neill and of the
stock of the famous sixth
century King Niall of the Nine
Hostages
Ui Neill
Gormley
Niall of the Nine Hostages
Ui Neill
Hogan
The Hogans are a Dalcassian
family, their eponymous
ancestor being Ogan who was
descended from an uncle of
Brian Boru
Brian Boru
Hynes
Niall of the Nine Hostages
Ui Neill
Kane
Niall of the Nine Hostages
Ui Neill
Kavanagh
The first Kavanagh was Donal
son of Dermot MacMurrough,
King of Leinster, who was one
one of the prominent figures in
Irish history, being the
immediate cause of the
Anglo-Norman invasion
Donal
Kelleher
Descendant of Ceileachar or
Kelleher, who was a nephew of
the famous Brian Boru
Brian Boru
Kennedy
Descendant of Kennedy (or
Cinneide) was a nephew of
Brian Boru
Brian Boru
Kinsella
Kinsellas and Kavanaghs
descend from Dermot
MacMurrough, illfamed King of
Leinster from 1134-1171; and
the names are derived from
Enna Cinsealach and Domhnall
Caomhanach, sons of that king
Donal
MacCarthy
The name of the earliest times
has been associated with south
Munster of Desmond. The third
century King of Munster, Oilioll
Olum, had two sons Eoghan
and Cormac Cas.  This family
descends from Eoghan.
Oilioll Olum
MacDermot
The family descends from
Tadhg O'Connor, who was
King of Connacht before the
Norman invasion
Tadhg O'Connor
Malone
The Malones are an ancient
sept, associated with the
O'Connors of Connacht
Tadhg O'Connor
McCaul
Niall of the Nine Hostages
Ui Neill
McGovern
Niall of the Nine Hostages
Ui Neill
McKee
Niall of the Nine Hostages
Ui Neill
McLoughlin
Niall of the Nine Hostages
Ui Neill
McManus
Niall of the Nine Hostages
Ui Neill
McMenamin
Niall of the Nine Hostages
Ui Neill
Molloy
Niall of the Nine Hostages
Ui Neill
Nolan
This is sept which has always
been associated with that part
of Ireland which lies around the
barony of Forth in Co. Carlow.
In pre-Norman days their
chiefs, who held high
hereditary office under the
Kings of Leinster, were known
as Princes of Foharta (modern
Forth)
King of Leinster
O'Boyle
Niall of the Nine Hostages
Ui Neill
O'Brien
Before Brian Boru's time, the
Dalcassian clan, known as the
Ui Toirdealbhaigh, to which
they belonged, was not of
outstanding importance in
Thomond: the greatness of
Brian gave them pre-eminence
there and in due course the
sept, which took the surname
O'Brien from him, divided into
several branches and
possessed a great part of
Munster, of which they were
frequently kings
Brian Boru
O'Connor
Niall of the Nine Hostages
Ui Neill
O'Doherty
Niall of the Nine Hostages
Ui Neill
O'Donnell
Niall of the Nine Hostages
Ui Neill
O'Gallagher
Niall of the Nine Hostages
Ui Neill
O'Hara
The O'Hara's descend from
Eaghra (pronounced Ara), who
was chief of Leyny in Co. Sligo,
and a member of the family of
Olioll Ollum, King of Munster. In
Irish the name is O hEaghra.

Here is a site which links the
O'Hara name to the
Tuatha de
Danann.
Oilioll Olum
O'Hurley
The Thomond sept of O
hUirthile descends from one
Uirthile or Urley (an obsolete
Christian name) who was of the
race of Blod, son of Cas, the
progenitor of the Dalcassians
Blod
O'Kane
Niall of the Nine Hostages
Ui Neill
O'Kelly
The Ui Maine (of which the
O'Kelly family belongs to)were
pre-Milesian Celts who were
later given a fictitious Milesian
pedigree showing them
descended from Maine Mor,
son of Eochu
Eochu
O'Reilly
Niall of the Nine Hostages
Ui Neill
O'Rourke
Niall of the Nine Hostages
Ui Neill
O'Shea
Of the so-called Ten Tribes of
Kilkenny the Shees (the only
ones of Milesian blood), were
the most influential.
Milesians
Quinn
Niall of the Nine Hostages
Ui Neill
Sullivan
Their origin, however, is
illustrious: descended from
Eoghan (Owen) Mor, the father
of the famous Oilioll Olum
Oilioll Olum