Erc UNKNOWN
Erc was born in 0410 in Ulster, Ireland.  He died in Ulster, Ireland.

 Erca Marca
Erca was born in 0426 in Ireland.  She died at the age of 26 in 0452.

 Fergus Mor Mac Erc
Fergus Mor was born in 0442 in Dalraida, Scotland.  He died in Atgyll, Scotland.