Hélissende le Coz of Avranches was born circa 1065 to Richard le Coz (1024-1082) and Emma de Conteville (1029-?) and died circa 1112 of unspecified causes. She married Guillaume II of Eu (1045-1140) 1089 JL .
Children
| Name | Birth | Death | Joined with |
| Henri I of Eu (1090-1140) | |||
Footnotes (including sources)
| ‡ General |
| ¶ Death |
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