Lleision was born in 1272 in Baglan, Glamorganshire, Cymru, the son of unknown parents.
His wife was Efa verch Ieuan. They were married, but the date and place have not been found. Their only known child was Ieuan ap Lleision (c1302-?).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | 1272 |
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