||Cynegils Wessex was a member of aristocracy in ancient Europe.|
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|King of the West Saxons
611 - 643
Having estimated the birth of his son Cwichelm as the year 600, applying the principle of 25 years per generation, Cynegils' birth year would be, say, 575.
The entry for 688 refers to Ceolwald as a brother of Cynegils. 
The Anglo-Saxon Chronicle states that in 611, Cynegils succeeded to the government in Wessex, and held it one and thirty winters (to 642). Cynegils, we are told, was the son of Ceol, Ceol of Cutha, Cutha of Cynric. 
Cynegils is presented in the Anglo Saxon Chronicles as a battle partner of Cwichelm in both 614 and 628.  In neither year is the relationship between the two specified, but a father-son battle-partnership is not uncommon.
The Anglo-Saxon Chronicle records that "Cynegils and Cwichelm" fought against Penda King of Mercia at Cirencester in 628 "and then they came to an agreement".  Sarah Zalucki suggests that the Chronicle could be expected to report a victory, but does not, so it is likely that Penda was the victor.
Under the year 648, the Anglo-Saxon Chronicles, states that Cuthred was the son of Cwichelm and Cwichelm was the son of Cynegils.  While subsequent authors have debated the paternity of Cwichelm, the Anglo-Saxon Chronicles remain the earliest source, and its account remains the most plausible.
The entry for 676 refers to Centwin as son of Cynegils and King. 
Cynegils was the father of:
Since Cwichelm first appears in the Battle of Beandun in the year 614, assume he was of fighting age at the time, therefore born about, say, 600.
D. P. Kirby see issues with Cynegils' parentage and thinks there might be two people with the same name. 
Cawley disagrees with the placement of Cwichelm as Cyngeils' son, stating that "the chronology of the various events described suggest that it is more likely that Cwichelm was probably Cynegils´s brother than his son, assuming that they were related at all. 
Cawley reports William of Malmesbury's assertion that Cwichelm was the brother, not son, of Cynegils and also that they ruled jointly. 
Cawley notes that the chronology of the various events described suggest that it is more likely that Cwichelm was Cynegils’s brother than his son, assuming that they were related at all. 
Wikipedia discusses the issue in terms of Latin terminology, i.e. the use of the Latin term Propinquus (relation, kinsman) rather than nepos (grandson, nephew) in the 648 entry.; however, this has little bearing since the Anglo-Saxon Chronicles were first written in Old English, and only subsequently translated into Latin.
Barbara Yorke accepts that there was a single Cwichelm, and that he was Cynegils' son. D.P. Kirby notes that the evidence is weak, confused, and shows signs of later changes to the record.The evidence that Cwichelm was king of the Gewisse is unassailable, but the question of his ancestry and relationship to Cynegils, if any, is much less certain.
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