[8] A 15th-century stained glass window in the parish church at St Neot in Cornwall, supposedly depicts Brychan, seated and crowned, holding in his arms eleven children.

Other Welsh sources claim the following additional sons: Caian, Cynbryd, Cynfran, Cynin, Dogfan, Dyfnan, Dyfrig, Hychan, Llecheu, Neffei, Rhawin, Llofan, Llonio, Heilin, Afallach and Gwynnws.

[11] The De Situ Brecheniauc lists: Meleri, Hunydd, Gwladys, Ceingar, Tudglid, Nyfain, Gwawr, Marchell, Lluan, Gwrygon Goddeu, Arianwen, Bethan, Ceinwen (Keyne), Cerddych, Clydai, Cynheiddon (identified with Saint Endelienta), Dwynwen, Eiliwedd, Goleudydd, Gwen, Lludd, Tudful, Tudwystl and Tybie.

[11] Listed in the Life of Saint Nectan are, by his wife, Gwladys: Adwen, Canauc (Cynog), Cleder (Clether), Dilic (Illick), Endelient (Endelienta), Helie, Johannes (Sion), Iona, Juliana (Ilud), Kenhender (Cynidr), Keri (Curig), Mabon (Mabyn), Menfre (Menefrewy), Merewenne (Marwenna), Morewenna (Morwenna), Nectanus (Nectan), Tamalanc, Tedda (Tetha), Wencu (Gwencuff, Gwengustle, name of Saint Nennocha), Wenheden (Enoder), Wenna (Gwen), Wensent, Wynup (Gwenabwy) and Yse (Issey).

[11] Of the holy children that settled in Cornwall, the following gave their names to Cornish churches: The Book of Leinster lists the following sons by Brychan's wife, Dína daughter of the King of the Saxons: Mo-Goróc, Mo-Chonóc (Cynog), Diraid, Dubán (Dyfnan), Cairinne (Caian), Cairpre, Iast, Ellóc (Dilic), Paan, Cáemán and Mo-Beóc.