Cruachan mounds, and that there is not a hillock (_cnoc_) in that
cemetery "which is not the grave of a king or royal prince, or of a
woman, or warlike poet." In another verse, he says that _each_ of the
fifty mounds had a warrior under it; and, altogether, it appears that,
although their number could doubtless be "reckoned," yet the burial
mounds of Cruachan, in or about the twelfth century, much exceeded fifty
in number. "Fifty" is simply used by the poet and his commentator to
show that, like the two other cemeteries of the triad (each of which is
also said to have had fifty) the Cemetery of Cruachan contained about a
third of the pagan notables of Ireland.

From this we see that, about the twelfth century, the Cemetery of the
Brugh contained at least fifty sepulchral mounds such as those described
by Mr. Petrie at Cruachan. Mr. Petrie further quotes two passages from
the _Dinnsenchus_, which specify in the following terms some of the most
famous of those "monuments" at the Brugh:--

"The Grave [or Stone Cairn, _Leacht_] of the Dagda; the Grave of
Aedh Luirgnech, son of the Dagda; the Graves of Cirr and Cuirrell,
wives of the Dagda--'these are two hillocks [_da cnoc_]'; the Grave
of Esclam, the Dagda's Brehon, 'which is called _Fert-Patric_ at
this day'; the Cashel [or Stone Enclosure] of Angus, son of
Crunmael; the Cave [_Derc_] of Buailcc Bec; the Stone Cairn
[_Leacht_] of Cellach, son of Maelcobha; the Stone Cairn [_Leacht_]
of the steed of Cinaedh, son of Irgalach; the Prison [_Carcar_] of
Liath-Macha; the 'Glen' of the Mata; the Pillar Stone of Buidi, the
son of Muiredh, where his head is interred; the Stone of Benn; the
Grave of Boinn, the wife of Nechtan; the 'Bed' of the daughter of
Forann; the _Barc_ of Crimthann Nianar, in which he was interred;
the Grave of Fedelmidh, the Lawgiver; the _Cumot_ of Cairbre