This is the 6706th most frequent Dutch word.
wigboldus
"Wigboldus" is not a standard Dutch word but may be used as a surname.
Here, 'Wigboldus' is used as a proper noun indicating a specific family name.
Wigboldus is een oude Nederlandse familienaam.
Wigboldus is an old Dutch family name.
In this sentence, 'Wigboldus' refers to an individual, assumedly named Wigboldus, who is depicted in the painting.
Op het schilderij staat een portret van Wigboldus.
In the painting, there is a portrait of Wigboldus.
'Wigboldus' here is applied as part of an individual's full name, denoting ownership of the store.