| Name | Role | Place | Source | |
|---|---|---|---|---|
| Pierre Joseph Edouard Merken | Child | 1864 | Sint-Truiden | Civil registration births |
| Pierre Merken | Witness | 1892 | Laken | Civil registration marriages |
| Pierre Merken | Father of bride | 1899 | Liège | Civil registration marriages |
| Pierre Merken | Deceased | 2013 | Riemst, Vlijtingen | Rouwbrieven |
| Pierre Servais Merken | Father of bride | 1897 | Liège | Civil registration marriages |
| Pierre Servais Merken | Father of bride | 1899 | Liège | Civil registration marriages |
| Pierre Servais Merken | Father of groom | 1889 | Liège | Civil registration marriages |
| Pierre Servais Merken | Father of groom | 1900 | Liège | Civil registration marriages |
| Pierre-Alphonse Merken | Father | 1897 | Tongeren | Civil registration births |
| Pieter (Pierre) Merken | Deceased | 2022 | Genk, Dilsen | Rouwbrieven |
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