From Hy-Fiachrach, what I can find is:
But,Earca, daughter of Eochaidh, King of Leinster, another wife of Amhalgaidh, had seven sons; namely, Fergus; Cormac Ceannfoda; Colom; Seudna; Eochaidh; Aoldobhar; and Emeach, from whom are sprung the family of O’h-Emeachain. Fergus, son of Amhalgaidh, had two sons, namely, Conaing and Muireadhach, King of Hy-Amhalgaidh. From Conaing are sprung the Hy-Airmeadhaigh, who are the inhabitants of Caille Conaill, in the north, that is the tract extending from Traigh Murbhaigh to Fearsad Tresi, where Tresi, the daughter of Nadfraoch, and wife of Amhalgaidh, son of Fiachra, was drowned. These are the tribes of Caille, viz., the families of O’Derg; O’h-Aodha,of Ard O’n-Aodha; O’Maoilconaire; O’Flannabhra; and O’'Tegha. And of the race of this Conaing, the son of Fergus, was Cumain Foda, from whom Cill Cumaoin in Caille Conaing has derived its name.
[p. 9]
Whose descendants are at Cill Cuimi, that is the family of O’Cuimin. But he is not the Saint Cuimin by whom the place was first blest; for he was:[p. 45]
- Cuimin Foda,
- son of Conaing or Conall,
- son of Amhalgaidh,
- son of Fergus,
- son of Fiachra.
This says that the families of Caille Conaill were Uí Amalgada or descendants of Amalgaid, but that the Uí Echach Muada were descended from Feradach Daithe, Amalgaid's brother. Although Sean Lavin's note does not explicitly state those families are from the same progenitor, he does seem to be grouping the Uí Echach Muada among the families of Caille Conaill. These genealogies are difficult to untangle.O’Dorchaidhe and O’Goirmiallaigh (the two chiefs of Partraighe) are of the race of Laoghaire, the son of Eochaidh Breac (or Eochaidh of the Moy). There are many Partraighes. —See the Genealogies of the Race of Brian, son of Eochaidh Muighmheadhoin for more of them.
[p. 47]
Of the race of Laoghaire also are the Hy-Eachach of the Moy, with their correlatives, and the family of O’Maoilfaghmhair, comharbas of Cill Ealaidh, in Tir Eachach, or Hy-Eachach of the Moy, of whom were these seven holy bishops, viz.. Mo Cele O’Maoilfaghmhair, from whom are descended the Mac Celes, of Cill Ealaidh; Aongus the Bishop, Muireadhach the Bishop, Aodh the Bishop, Ainmtheach the Bishop, Maolan the Bishop, and Flann the Lecturer, i. e. a pious Bishop of the Clann Cele.
Of the race of Laoghaire, in Hy-Eachach, of the Moy, are the O’Criadhchens, the O’Leanains, and the O’Flaitiles, or O’Laitiles.
The country of Hy-Eachach, of the Moy, extends from Ros Serce to Fionnchaluim, and to Fearsad Tresi. Ros Serce is so called from Searc, the daughter of Cairbre, son of Amhalgaidh, who blessed the village and the wood which is at the mouth of the River Moy. This Searc was a miraculous female saint, and it was for her the church and duirtheach, which are at that Ros (or in that Ros), at Roserc, were erected.
[pp. 51-53]
Also, Tim McEvoy, back last April or so, had pointed out that Amalgaid may have originally been spelled as Amlongad, which is an interesting variant that goes back to the Breastagh Ogham Stone. Would that we had more records from these early times.
