| Name | Role | Place | Source | |
|---|---|---|---|---|
| Walter Butler | Registered | 1732 | Amsterdam | Notarial records |
| Walter Butler | Opvarende koopvaardij | 's-Gravenhage | Persoonskaart | |
| Walter G. Butler | Travelers | 1925 | New York | Passenger registers |
| Walter Henry Butler | Father | 1953 | Leiden | Civil registration deaths |
| Walter Henry Butler | Father | 1953 | Leiden | |
| Walter L. Butler | Travelers | 1923 | New York | Passenger registers |
| Walter Maurice Butler | Registered | Antwerpen | Foreigners register | |
| Walter Maurice Butler | Registered | Antwerpen | Foreigners register |
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