' ... John de Cogan (d. 1278), [footnote: Annals of Ireland, vol. ii, p. 318. He was s. and h. of Richard de Cogan, of Cogan, living 1238 (by Basilie, sister of Walter de Ridelesford, of Bray, co. Dublin, and Castledermot, co. Kildare), ...]'
↑ Birth year estimated based on estimated birth year of her mother and the known birth date of her grandson John de Cogan (eldest son of eldest son) (b. 8 Sep 1243) as per Complete Peerage 3:356-7.
