O'Bilrey

Of Munster

Arms: Ar. two lions pass. guard. in pale gu.

Crest: A hand couped at the wrist erect, holding a sword impailing a boar's head couped all ppr.

NIALL or Neal, brother of Menmon who is No. 106 on the "Macnamara" pedigree, ws the ancestor of MacFlancha,* which is anglicised Clanchy, Clancie, Clancy, Mac Clancy, Clinch, and  Glancy.

106. Niall: son of Aodh (or Hugh) odhar; a quo the Hy-Niall (or O'Neill), of Munster.
107. Flancha: his son; a quo Mac Flancha.
108. Donal: his son.
109. Gilloilbhe ("oibheim": Irish, a reproach): his son.
110. Flaitheamh: his son.
111. Gilloilbhe (2): his son.
112. Flaitheambh (2): his son.
113. Flathrigh (flath: Irish, "a chief" and Irish, "a king"; Corn. ruy; Arm. rue; Hind. raj-a; Lat. rex; Fr. roi): his son; a quo O'Flathrigh, anglicised Flattery.
114. Diarmaid (or Dermod): his son.
115. Lacneach: his son; had two brothers - 1. Hugh, and 2. Donal.
116. Hugh: son of Lacneach.
117. Donal: his son.
118. Hugh (2): his son.
119. Murtagh: his son.
120. Baothach (latinized Boetius): his son.
121. Hugh (3): his son.
122. Baothach (2): his son.
123. Baothach (3) Clancy: his son.

* MacFlancha: The root of this name is the Irish word "Flann," genitive, "flainn" [floin or flin], blood; and the name itself means "the descendants of the red-complexioned man."  Besides MacFlancha the following surnames are derived from the same prolific root: Flanagan, Flannagan, Flinn, Flynn, Glenn, Glynn, Linn, Lynn, Macklin, Maglin, Magloin, McGloin.

REF:
'Irish Pedigrees' by O'Hart, Volume 1, Page 80, dated 1892, reprinted 1989.