place-names and personal-names
In my county there’s a village named Van —–. I think that if my name had a Van or equivalent, and someone proposed to name a town for me, I’d prefer they drop the particle.
On another hand, Jan van Steenbergen has said he finds it odd to be referred to as “Steenbergen”.
An old book on place-names mentions a patch of London that has (or had) a street for every word of the former owner’s peerage title(s), including Of Alley.
(Websearch for “Couver” turns up only the French verb.)