Frithugyth was the wife of King Æthelheard of Wessex (died 740).

Frithugyth is reported by the Anglo-Saxon Chronicle

Anglo-Saxon Chronicle

The Anglo-Saxon Chronicle is a collection of annals in Old English chronicling the history of the Anglo-Saxons. The original manuscript of the Chronicle was created late in the 9th century, probably in Wessex, during the reign of Alfred the Great...

to have made a pilgrimage

Pilgrimage

A pilgrimage is a journey or search of great moral or spiritual significance. Typically, it is a journey to a shrine or other location of importance to a person's beliefs and faith...

 to Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 in 737 along with Forthhere, Bishop of Sherborne. The Chronicle offers no further information.

Frithugyth, like her predecessor as queen of Wessex, Æthelburg, wife of Ine of Wessex

Ine of Wessex

Ine was King of Wessex from 688 to 726. He was unable to retain the territorial gains of his predecessor, Cædwalla, who had brought much of southern England under his control and expanded West Saxon territory substantially...

, is recorded in surviving charters, not merely witnessing her husband's donations of land to the church, but also making donations in her own right. Although the reliability of many of these charters is questionable, historian Barbara Yorke

Barbara Yorke

Barbara Yorke is a historian of Anglo-Saxon England.She studied history and archaeology at Exeter University, where she completed both her undergraduate degree and her Ph.D. She is currently Professor of Early Medieval History at the University of Winchester, and is a Fellow of the Royal...

 notes that "Queen Frithugyth would be an unlikely choice as donor in a completely fictitious" charter.

The principal donation attributed to Frithugyth is a sizable estate at Taunton

Taunton

Taunton is the county town of Somerset, England. The town, including its suburbs, had an estimated population of 61,400 in 2001. It is the largest town in the shire county of Somerset....

, given to Winchester Cathedral

Winchester Cathedral

Winchester Cathedral at Winchester in Hampshire is one of the largest cathedrals in England, with the longest nave and overall length of any Gothic cathedral in Europe...

. This was expanded by later Kings of Wessex and England, including Æthelwulf, Æthelstan, and Eadred, who refer to Frithugyth's earlier donation.

No descendants of Æthelheard and Frithugyth are known.