Cedda was the second son of Cuthwine

Cuthwine

Cuthwine, born c. 565, was a member of the House of Wessex, son of Ceawlin of Wessex. After the deposition of his father Ceawlin from the throne of Wessex in 592 he did not inherit the throne which passed to his cousin, Ceol...

 and consequently a member of the Wessex family

House of Wessex family tree

The following chart is a family tree of the kings of the House of Wessex, a dynasty whose members were Kings of Wessex, and then, from Athelstan onwards, Kings of England....

. He was born c. 590 and his death date is unknown. He had one son, Coenberht, the father of King Caedwalla of Wessex

Caedwalla of Wessex

Cædwalla was the King of Wessex from approximately 685 until he abdicated in 688. His name is derived from the British Cadwallon. He was exiled as a youth, and during this time attacked the South Saxons and killed their king, Æthelwealh, in what is now Sussex. Cædwalla was unable to hold the...

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His name is related to that of St Chad of Mercia

Chad of Mercia

Chad was a prominent 7th century Anglo-Saxon churchman, who became abbot of several monasteries, Bishop of the Northumbrians and subsequently Bishop of the Mercians and Lindsey People. He was later canonized as a saint. He was the brother of Cedd, also a saint...

 (spelt Ceadda in Bede's Ecclesiastical History) and is derived from the Brythonic (British Celtic) root 'cat' or 'cad' meaning "battle." It is one of a number of apparently Celtic names found in the West Saxon ruling family, including that of Cedda's grandson Caedwalla.

Sources

http://freepages.genealogy.rootsweb.com/~havens5/p24026.htm - brief outline of Cedda.

• Koch, J.T., (2006) Celtic Culture: A Historical Encyclopedia, ABC-CLIO, ISBN 1851094407