Efa verch Gwrgant

Efa verch Gwrgant was born about 0979 in Glamorgan,Wales.¹   Efa verch Gwrgant's father is Gwrgant ap Ithel and her mother is Miss verch Gwyn.  Her paternal grandfather is Ithel ap Unknown; her maternal grandfather is Gwyn ap Unknown.  She is an only child.

They had two sons and a daughter, named Ieuaf ap Cadwgan, Iorwerth ap Cadwgan and Constance Wen verch Cadwgan.