Three entries with the name Sisillius of Britain.

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Sisillius of Britain

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According to Geoffrey of Monmouth, king of Britain in the seventh century BC.

He was the son of King Gurgustius. His nephew, King Iago, succeeded him, and his son, Kinmarch, succeeded Iago.

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Source
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138

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Sisillius of Britain

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In Geoffrey of Monmouth’s chronicle, a king of Britain in the fourth or third century BC.

He succeeded his father, Guithelin, when he was only seven. His mother was Queen Marcia. Sisillius was succeeded by his son Kimar.

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Source
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138

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Sisillius of Britain

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According to Geoffrey of Monmouth, a king of Britain in the second century BC.

He succeeded King Owen and was succeeded by King Bledgabred.

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Source
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138

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