How is the word 'van' in the name 'van Halen' called.
I think it is a little uncommon to have this in a British name. I am referring to words like:
van in the name van Halen
del in the name del Torres
de la in the name de la Mancha
Is there a word from this in English? Prefix perhaps? In Dutch it is voorvoegsel, but that probably does not help much with the question.