Guy I de Châtillon-sur-Marne, Lord of Châtillon-sur-Marne, was born circa 1043 in Châtillon-sur-Marne, Île-de-France, France to Miles de Châtillon-sur-Marne (-1044) and Avemelle de Montfort (c1029-c1076) and died 1089 of unspecified causes. He married Ermengarde de Choisy .
Children
| Name | Birth | Death | Joined with |
| Gaucher I de Châtillon-sur-Marne (c1063-1096) | 1063 Châtillon-sur-Marne, Île-de-France, France | 1096 | Mahaut de Louvain (c1060-1112) |
| Jacques de Châtillon-sur-Marne | |||
| Pierre de Châtillon-sur-Marne | |||
| Guermond de Châtillon-sur-Marne | |||
Footnotes (including sources)
| ‡ General |
| Ω Birth |
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