G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume I, page 451.

http://members.aol.com/lochlan2/keating.htm
List P
The genealogy of O Eidirsceoil [O'Driscoll]
86 Sir Finghin, son of
85 Conchubhar, son of
84 Conchubhar, son of
83 Finghin, son of
82 Mac Con, son of
81 Mac Con, son of
80 Finghin, son of
79 Donnchadh Gud, son of
78 Mac Raith, son of
77 Donnchadh Mor, son of
76 Fothadh, son of
75 Fionn, son of
74 Mac con, son of
73 Fathadh, son of
72 Eidirsceol, son of
71 Fionn, son of
70 Nuadha, son of
69 Donnghal, son of
68 Maoltuile, son of
67 Dunghus, son of
66 Aonghus, son of
65 Folachtach, son of
64 Flannan, son of
63 Brandubh, son of
62 Eidirsceol, son of
61 Naithi, son of
60 Aonghus Gaifhuileach, son of
59 Mac Con, son of
58 Mac Niadh, son of
57 Lughaidh, son of
56 Daire, son of
55 Fear Uillne, son of
54 Siothbholg, son of
53 Daire, son of
52 Euilleann, son of
51 Eadhamhraidh, son of
50 Deaghadh Dearg, son of
49 Deirgthine, son of
48 Nuadha Airgtheach, son of
47 Lachtaine, son of
46 Logh Feidhleach, son of
45 Eireamhon, son of
44 Eadhaman, son of
43 Gos, son of
42 Sin, son of
41 Maithsin, son of
40 Logh, son of
39 Eadhaman, son of
38 Mal, son of
37 Lughaidh, son of
36 Ioth, son of
35 Breoghan. Of the posterity of Lugaidh son of Ioth are
the following families: Mag Amhalguidh of Callrach, O
Laoghaire of Ros, Mag Flannchuidh of Dartrach, O
Cobhthaigh, O Cuirnin, O Floinn of Ard, O Baire of Ara,
and Mac Ailin in Scotland sprung from Fathadh Canann son
of Mac Con. Also of the progeny of this Lughaidh son of
Ioth are O Treabhair, O Criadhagain and O Cairnein.