Family: Merdydd Ap Henry Dwinnn / Mallt Verch Gruffydd (F7943)
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Male
Merdydd Ap Henry Dwinnn
Birth 1354 Yorkshire, England 
Death 1401 Yorkshire, England Burial Marriage Father Henry Ap Griffith Dwnn | F23482 Group Sheet Mother Margred Ferch Ieuan | F23482 Group Sheet
Female
Mallt Verch Gruffydd
Birth Abt 1362 Yorkshire, England Christening Yorkshire, England Death 1410 Yorkshire, England Burial Father Griffith Ap Cadwgan Fychan | F23481 Group Sheet Mother Isabel Ferch Rhys Llwyd | F23481 Group Sheet
Female
+ Mabli Ferch Maredudd
Birth 1400 Yorkshire, England Death 1438 Yorkshire, England Burial Spouse Gruffudd ap Nicolas | F9129 Marriage 1419 Yorkshire, England