Events
Date of Birth: unknown.
Place of Birth: unknown.
Bartrum gives Dyddgu a number of 10 in his generational dating system, which implies a birth date of, very roughly, about 1330.
Date of Death: unknown.
Place of Death: unknown.
Relationships
Father: Robert ap Gruffudd ap Hywel.
This relationship is shown by Bartrum (Marchudd 16).
Mother: Lleucu ferch Robert ab Iorwerth.
This relationship is shown by Bartrum (Marchudd 16).
Spouse: Gruffudd ap Gronwy ap Heilin.
This relationship is shown by Bartrum (Marchudd 5; Marchudd 16).
Children:
Robin Llwyd married Margred ferch Dafydd.
References
Bartrum, Peter C., “Marchudd 5”, “Marchudd 16” in An Electronic Version of Welsh Genealogies AD 300-1500.
[The sources that Bartrum cites for Dyddgu are: Peniarth 131 (49), written early in the reign of Henry VIII; and Peniarth 176 (251, 355) by Gruffudd Hiraethog (died 1564). Only Peniarth 176 (251) gives her name.]