[1] Senchan's mother's name was Dediva (also called Editua or Dedi or Deidi or Deighe or Deidiu or Deaga or Mediva), daughter of Tren, son of Dubhthach moccu Lughair, who was also a previous Chief Ollam of Ireland and royal poet of King Lóegaire mac Néill.
Furthermore, in Tromdámh Guaire he is referred to as "the aged Senchan" in c. 640 and Geoffrey Keating's History of Ireland states that at the Synod or Convention of Drumceat in c. 593 AD, "Seanchán mac Cuairfheartaigh" was made Chief Ollam over the province of Connacht.
Senchán [dororba péist] día rothogaibh spirat na h-écsi cenn do fo sceib (leg.
Though my stores be emptied well-nigh Twin bright cups there yet remain Win them with the raid of Cualigne Chant us, bard, the famous Tain.
Seanchan departed, with the following farewall: We depart from thee, O stainless Guaire A year, a quarter, and a month Have we sojourned with thee, high King Three times fifty poets, good and smooth Three times fifty students in the poetic art Each with a servant and a dog They were all fed in the one great house.
To rectify this, Seanchan, accompanied by his son Murgen and his second cousin Eimena, undertook to travel in search of the book and return the Táin to Ireland.
Senchan and his wife also appear in the old tale Scéla Cano meic Gartnáin and in Cormac's Glossary where he visits the Isle of Man.
The Middle-Irish poem c. 1100 'Aimirgein Glúngel tuir tend', attributed to Gilla in Choimded Úa Cormaic of Tulach Léis, refers to Senchan- Stanza 57.