Edith of Mercia

He went to Ireland to muster troops and formed an alliance with Gruffudd ap Llywelyn, who had been king of Gwynedd (1039–1055) but assumed the sovereignty of all Wales in 1055.

[2] It was presumably in the year of her father's appointment (c. 1057) that Ealdgyth married his political ally, King Gruffudd ap Llywelyn.

[3] On her marriage, she was given a modest amount of land in England, though the only estate which can be certainly identified as having belonged to her is one at Binley, Warwickshire.

The date of the marriage is unknown, but it must have taken place at some stage before the Conquest, whether before or after Harold's coronation as king of England (January 1066).

In October that year, Harold was defeated and died in the Battle of Hastings, which was fought against the invading forces of William, Duke of Normandy, who would subsequently ascend the English throne.

[1] Harold had a number of children with his common law wife Edith the Fair, but his marriage to Ealdgyth may not have produced any offspring.