Where does “boorling” come from?

boorling (Dutch) comes from Dutch -ling, from Dutch -ing, from Middle Dutch -inge, from Old Dutch -inga.

Ancestry of “boorling”, step by step

Step	Language	Word	Meaning
1	Dutch	-ling	A suffix that describes a person in terms of a...
2	Dutch	-ing	Creates action nouns referring to the performance...
3	Middle Dutch	-inge	—
4	Old Dutch	-inga	—