Shown in some secondary sources as having married as her second husband Gwrgan son of Ithel, which seems chronologically unlikely.
Marriage Information:
Iwerydd married Edwyn ap Gronwy of Tegeingl, son of Gronwy ab Einion and Ethelfleda ferch Edwin. (Edwyn ap Gronwy was born in 1020 in Tegeingl, Flintshire, Wales and died in 1073 in Northop, Coleshill, Flintshire, Wales.