|SOME NOTES ON MEDIEVAL ENGLISH GENEALOGY|
Volume 8, page 170:
He [John de Bermingham, earl of Louth (d. 1329)] m., between June 1308 and Oct. 1320, Aveline, da. of Richard (DE BURGH), 2nd EARL OF ULSTER [I.], by Margaret, da. of Sir John DE BURGH, of Lanvaley.
In a correction of volume 12, part 2, p.176 (Ulster) in volume 14, the identification of Margaret as a daughter of Sir John de Burgh is removed, and instead she is said to be "possibly daughter of Arnoul III, Count of Guisnes, by Alice, daughter of Enguerrand III, Lord of Coucy".
[This discrepancy was pointed out by Adrian Channing in May 2002.]