I found the birth certificate of my great-grandfather Theodorus Johannes Adrianus Pardoen (ahnentafel number 12) on FamilySearch.org. A summary:
On 22 January 1881, Theodorus Joannes Gerardus Pardoen, constable, from Soest, appeared for the registrar of Soest and declared that his wife Aaltje Sophia van der Hoogt gave birth to a baby boy, on 22 January at 4 am, to whom he gave the names Theodorus Johannes Adrianus.
The witnesses were officials who worked at the town hall, and (probably) not related. Constable Pardoen lived in Soest for only a short time. As far as I know he did not have any relatives in this town, and he probably did not stay long enough to make many friends.
Files:
Theodorus Johannes Adrianus Pardoen,
Theodorus Joannes Gerardus Pardoen,
Aaltje Sophia van der Hoogt.