Madog was born about 1260 in Merthyr Tudful, Uwch Caeach, Glamorganshire, Cymru, the son of unknown parents.
He died about 1340. The place is not known.
His wife was Everydd verch Lewis Rosser. They were married, but the date and place have not been found. Their only known child was Gwilym Sais ap Madog (1302-?).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1260 |
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| Death | ABT 1340 |
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