Gwenllian ferch Einion ap Ieuan Llwyd 
10th great-grandmother of Louise Underwood.
12th great-grandmother of Laura Jane Munson.
- Family Background:
- Underwood and Allied Families
- Appears on charts:
- Pedigree for Louise Underwood
Gwenllian ferch Einion ap Ieuan Llwyd married Gruffudd ap Hywel, son of Hywel ab Einion and Mali Llwyd ferch Llywelyn ap Ieuan.
