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| Simon II of Clermont Simon II de Clermont | |
|---|---|
 | |
| Seigneur of Ailly | |
| Reign | 1226–1286 |
| Seigneur of Nesle | |
| Reign | 1226–1286 |
| Born | c. 1216 |
| Died | 1286 |
| Spouse | Adele of Montfort |
| Issue | Raoul of Clermont Guy I of Clermont and more |
| House | House of Clermont-en-Beauvaisis also House of Creil also House of Clermont-Nesle |
| Father | Raoul I of Clermont-Nesle |
| Mother | Gertrude of Nesle |
Simon II of Clermont-Nesle (c. 1210–1285/86) was Seigneur (Lord) of Ailly, Maulette and Nesle (in Picardy)