HB 41 refers to a site called Campus Elleti:
“As they explored all the provinces they came to the plain of Elled in the country called Glywysing.”
where the envoys found what they were searching for, a child without a father. His name was “Ambrosius”, that is “Embreis Guletic”. The answer to the question of who the plain was named after can be found in JC 4 which consists of three parts:
||JC 4b||JC 4c seg.|
|-4||Owain Finddu||Constantinus||Owain Finddu|
|-5||Macsen Wledig||Magnus Maximus||Macsen Wledig||Ceindrech|
|-8||Cynan||Constantius Chlorus||Elen Luyddog||Morddu|
JC 4c mentions the individual, Eledi ap Morddu, as a grandfather of Ceindrech, a wife of Macsen Wledig and mother of Owain Finddu. JC 4a shows Glywys, the eponym of Glywysing, as a descendant of Owain.
The Liber Landavensis mentions the name “Elleti” and the place is located near “Llansanwyr”, that is Llansannor. It may be significant that the village is less than 3 miles distant from Llanillid. There was a chapel dedicated to St. Ilid on Tintagel island.
 Davies, W., 1979, 98.