Cecily was born about 1252 in Sandbach, Congleton, Cheshire, England, the daughter of unknown parents.
Her husband was sir William de Brereton. They were married, but the date and place have not been found. Their only known child was sir William V (c1277-?).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1252 |
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