| Name | Role | Place | Source | |
|---|---|---|---|---|
| Anthony Hoevenaar | Mentioned | 1676 | Leiden | Notarial records |
| Jacob Davidt | Registered | 1637 | Leiden | Notarial records |
| Jan Davidt Mathematicus | Mentioned | Leiden | Notarial records | |
| Jan Davidt Mathematicus | Mentioned | 1647 | Leiden | Notarial records |
| Jan Davidt Mathematicus | Mentioned | 1663 | Leiden | Notarial records |
| Jan Davidt Mathematicus | Mentioned | Leiden | Notarial records | |
| Jan Davidt Mathematicus | Mentioned | Leiden | Notarial records | |
| Jan Davidt Mathematicus | Mentioned | Leiden | Notarial records | |
| Johannes van Toor | Mention | 1835 | Leiden | Notarial records |
| Julius Theodor Leopold Hoeffteke | Mention | 1829 | Leiden | Notarial records |
The term instrumentmaker appears in user-added comments on records 1
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