| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gabriel Alfred Roger Decoster | Deceased | 2009 | Ézanville | Civil registration deaths |
| Gabriel Alfred Roger Decoster | Deceased | 2009 | Ézanville | Civil registration deaths |
| Gabriel Decoster | Witness | 1857 | Brussel | Civil registration marriages |
| Gabriel Decoster | Witness | 1861 | Brussel | Civil registration marriages |
| Gabriel Decoster | Witness | 1862 | Brussel | Civil registration marriages |
| Gabriel Decoster | Witness | 1863 | Brussel | Civil registration marriages |
| Gabriel Decoster | Witness | 1861 | Brussel | Civil registration marriages |
| Jean Marcel Leon Gabriel Decoster | Deceased | 2018 | Hazebrouck | Civil registration deaths |
| Jean Marcel Leon Gabriel Decoster | Deceased | 2018 | Hazebrouck | Civil registration deaths |
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